Quest Diagnostics

Detect possible allergic responses to various substances in the environment and evaluate for hay fever, asthma, atopic eczema, and respiratory allergy. The quantitative allergen-specific IgE test is indicated: (1) to determine whether an individual has elevated allergen-specific IgE antibodies; (2) if specific allergic sensitivity is needed to allow immunotherapy to be initiated; (3) when testing individuals for agents that may potentially cause anaphylaxis; (4) when evaluating individuals who are taking medication (eg, long-acting antihistamines) that may interfere with other testing modalities (eg, skin testing); (5) if immunotherapy or other therapeutic measures based on skin testing results have not led to a satisfactory remission of symptoms; (6) when an individual is unresponsive to medical management where identification of offending allergens may be beneficial.

Amino Acid analysis is necessary for the diagnosis of a variety of inborn errors of metabolism. These include, but are not limited to: - phenylketonuria - tyrosinemia - citrullinemia - non-ketotic hyperglycinemia - maple syrup urine disease - and homocystinuria. The assay is also key for the continued monitoring of treatment plans for these disorders and useful for assessing nutritional status of patients. Interpretive Information: Elevation of 1 or more amino acids may be diagnostic of an aminoacidopathy. Elevated amino acid levels are also associated with noninherited diseases such as severe liver disease and renal tubular disorders (eg, Fanconi syndrome). Decreased levels of amino acids are associated with malnutrition as seen in the elderly or those with poor protein intake or gastrointestinal disease. Additional laboratory testing is required to diagnose other inherited disorders (ie, lactic acidosis, organic aciduria, and some urea cycle defects). Results should be evaluated in the context of clinical findings and/or additional test results. Infant formulas that are supplemented with amino acids (particularly methionine and homocitrulline) and parenteral nutrition may affect the clinical accuracy of this test. Bacterial contamination of specimens and certain medications, such as valproic acid, can also affect the levels of specific amino acids. In addition, the absence of a protein-containing diet in newborns may preclude detection of selected aminoacidopathies. References: Part 8. Amino Acids. In: Scriver CR, Beaudet AL, Valle D, Sly WS, Childs B, Kinzler KW, Vogelstein B, eds. The Metabolic and Molecular Bases of Inherited Disease. 8th ed. New York, NY: McGraw-Hill, Inc; 2001;1665-2105. Part IV. Disorders of amino acid metabolism and transport. Fernandes J, Saudubray J-M, Van den Berghe G, eds. Inborn Metabolic Diseases Diagnosis and Treatment. 3rd ed. New York, NY: Springer; 2000;169-273. Part 2. Disorders of amino acid metabolism. Nyhan WL, Barshop BA, Ozand PT, eds. Atlas of Metabolic Diseases. 2nd ed. New York, NY: Oxford University Press Inc; 2005;109-189. Blau N, Duran M, Blaskovics ME, Gibson KM, eds. Physician's Guide to the Laboratory Diagnosis of Metabolic Diseases. 2nd ed. New York, NY: Springer; 2003. Heiblim DI, Evans HE, Glass L, et al. Child neurology: amino acid concentrations in cerebrospinal fluid. Arch Neurol. 1978;35:765-768. Goldsmith RF, Earl JW, Cunningham AM. Determination of delta-aminobutyric acid and other amino acids in cerebrospinal fluid of pediatric patients by reversed-phase liquid chromatography. Clin Chem. 1987;33:1736-1740.

Amino acid analysis is necessary for the diagnosis of a variety of inborn errors of metabolism. These include, but are not limited to: - phenylketonuria, tyrosinemia, citrullinemia, non-ketotic hyperglycinemia, maple syrup urine disease, and homocystinuria. The assay is also key for the continued monitoring of treatment plans for these disorders and useful for assessing nutritional status of patients.

The Anaplasma phagocytophilum and Ehrlichia chaffeensis Antibody Panel is a comprehensive serological test used to diagnose infections caused by these two tick-borne pathogens. Anaplasma phagocytophilum is responsible for anaplasmosis, while Ehrlichia chaffeensis causes human monocytic ehrlichiosis (HME). Both diseases can present with similar clinical symptoms, including fever, headache, muscle aches, and in some cases, more severe complications like thrombocytopenia and elevated liver enzymes. The antibody panel typically includes tests for both IgM and IgG antibodies to each pathogen, providing information about recent and past infections. The presence of IgM antibodies suggests a recent or acute infection, while IgG antibodies indicate past exposure or a longer-term response to the infection. This panel is particularly valuable in areas where ticks are prevalent and in patients with a history of tick exposure, as it helps differentiate between these two infections, which, despite their similarities, may require different approaches to treatment. A positive result for either pathogen can guide appropriate antibiotic therapy and management. However, results should be interpreted with caution, as cross-reactivity between antibodies to different pathogens can occur, and the presence of antibodies alone does not always indicate an active infection. Clinicians often consider these test results alongside the patient's clinical presentation, history, and other laboratory findings for an accurate diagnosis.

Catecholamines, Fractionated, Random Urine is a test that measures the levels of certain hormones called catecholamines in a random urine sample. Catecholamines are a group of hormones and neurotransmitters that include substances like epinephrine (adrenaline), norepinephrine, and dopamine. These chemicals play essential roles in the body's "fight or flight" response, regulating blood pressure, heart rate, and other physiological responses to stress. The test is typically used to diagnose and monitor certain medical conditions, such as: Pheochromocytoma: This is a rare tumor that can develop in the adrenal glands (located on top of the kidneys) and can produce excessive amounts of catecholamines. Elevated levels of catecholamines in urine can be a sign of pheochromocytoma. Paraganglioma: Similar to pheochromocytoma, paragangliomas are rare tumors that can develop in other parts of the body and also produce excess catecholamines. Neuroblastoma: This is a type of cancer that commonly occurs in children and can also produce high levels of catecholamines. A random urine sample is collected for this test, which means that it can be taken at any time during the day without any specific preparation. The levels of catecholamines in the urine are measured to determine if they fall within the normal range or if there is an excess, which may suggest an underlying medical condition. It's important to note that the interpretation of catecholamine levels in urine can be influenced by various factors, including: - medications, - diet, - and stress. Therefore, healthcare providers may consider additional tests and clinical information when making a diagnosis. If your healthcare provider has recommended this test, they will provide specific instructions on how to collect the urine sample and any other necessary preparations.

What Is Synovial Fluid? Synovial fluid is the thick liquid that lubricates your joints and keeps them moving smoothly. It’s on all of your joints, including in your knees, shoulders, hips, hands, and feet. What Is a Synovial Fluid Analysis? A synovial joint fluid analysis is a group of tests your doctor can use to diagnose problems with your joints. Joint conditions like arthritis, gout, infections, and bleeding disorders can change how your synovial fluid looks and feels. A sample of this fluid taken during a procedure called an arthrocentesis can help your doctor figure out what’s causing your symptoms. What’s The Purpose of a Synovial Fluid Analysis? If you have joint symptoms like: → Pain → Redness → Swelling → Fluid buildup Synovial fluid analysis can also help your doctor figure out if you have: → A condition that inflames your joints, like gout, rheumatoid arthritis, and lupus → An infection like septic arthritis → Bleeding disorders like hemophilia or von Willebrand disease → A disease that break down joints over time, like osteoarthritis Your doctor might also use this test to see if your treatment for your joint condition is working. A synovial fluid analysis may be ordered to diagnose or rule out the following conditions: → Autoimmune disorders: Autoimmune disorders are conditions in which a person’s immune system mistakenly attacks healthy tissue. In some autoimmune disorders, including rheumatoid arthritis, lupus, and psoriatic arthritis, the immune system damages healthy tissues of the joints. → Septic arthritis: Septic arthritis is an infection caused by microbes such as bacteria or fungi that lead to acute inflammation in one or more joints. → Gout or pseudogout: Gout and pseudogout are painful forms of arthritis, caused by the accumulation of uric acid or calcium crystals in the joint. → Bleeding in the joint: Also called hemarthrosis, an accumulation of blood in the joint can be caused by an injury to the joint, cancer, hemophilia, and other health conditions. Synovial fluid analysis is helpful for determining the underlying cause of arthritis, particularly for septic or crystal-induced arthritis. The white cell count, differential count, cultures, Gram stain, and crystal search using polarized light microscopy are the most useful studies. Arthrocentesis with synovial fluid analysis should be attempted in all patients who have a joint effusion or signs suggestive of inflammation within the joint, without a known cause. The most important reason to perform a synovial fluid analysis may be to evaluate for septic arthritis in a patient presenting with an acutely swollen joint that is painful and warm even in patients with a known arthritic disease. Synovial fluid analysis is also helpful in narrowing the differential diagnosis by distinguishing between categories of joint effusions (ie, inflammatory versus noninflammatory), and to diagnose hemarthrosis.

The Chlamydia/Chlamydophila Antibody Panel 3 (IgG, IgA, IgM) is a comprehensive serological test used to detect antibodies against Chlamydia and Chlamydophila species in a patient's blood. This panel tests for three types of antibodies: Immunoglobulin G (IgG), Immunoglobulin A (IgA), and Immunoglobulin M (IgM), each providing different information about the timing and stage of the infection. IgG antibodies are usually indicative of a past infection or a later stage of an ongoing infection, as they develop over a longer period and can persist for years. IgA antibodies are often associated with mucosal infections and can indicate a more recent or ongoing infection, especially in the respiratory or genital tracts. IgM antibodies are the first to appear in response to an infection and suggest a recent or acute infection. The Chlamydia/Chlamydophila Ab PNL 3 is particularly useful in diagnosing infections like Chlamydia pneumoniae, which can cause respiratory illnesses, and Chlamydia trachomatis, known for causing sexually transmitted infections and trachoma. A comprehensive analysis of IgG, IgA, and IgM levels provides a more complete picture of the infection's status, helping clinicians to determine whether the infection is recent, ongoing, or past, and to guide appropriate treatment. However, results should be interpreted carefully in the context of clinical symptoms and other diagnostic tests due to the potential for cross-reactivity and the varying persistence of antibody types.

Salivary cortisol level, particularly late-night salivary cortisol (LNSC) level, is useful in screening for endogenous Cushing syndrome. Two or more positive results of LNSC tests may be used to confirm Cushing syndrome. LNSC measurement may also be used to monitor for recurrence of Cushing disease. Normally, the secretion of cortisol has a circadian rhythm. Patients with Cushing syndrome often lose the late-night circadian nadir (= low point). Therefore, an elevated LNSC level may provide initial evidence for Cushing syndrome. Two or more positive results of LNSC tests may establish the diagnosis of Cushing syndrome if non-neoplastic hypercortisolism (pseudo-Cushing syndrome) is excluded. Because saliva is convenient to collect, LNSC testing is especially useful for individuals who need to provide multiple specimens over time for the evaluation of cyclic Cushing syndrome. Annual LNSC testing is recommended to monitor for the recurrence of Cushing disease after pituitary surgery. LNSC testing may also be used in assessing treatment outcomes in patients receiving medical therapy for Cushing disease. Non-neoplastic hypercortisolism caused by obesity, psychiatric disorders, alcohol use disorder, and polycystic ovary syndrome may increase LNSC levels. LNSC testing should not be used to screen for Cushing syndrome in individuals without normal day and night cycles. LNSC testing has low sensitivity in patients with adrenal tumors. Other tests, such as urinary free cortisol and dexamethasone suppression test, may also be used to screen for Cushing syndrome. The results of this test should be interpreted in the context of pertinent clinical and family history and physical examination findings.

Primarily for research and to support attempts to understand the pathogenesis of immune, infectious, allergic, or inflammatory disorders.

Sjögren syndrome is an autoimmune disease characterized by lymphocyte infiltration of exocrine glands, which manifests as dry eyes and mouth. The syndrome is estimated to be between 9 and 20 times more common in women than in men and typically presents in the 4th or 5th decade of life. The disease can present by itself (primary) or in association with another underlying autoimmune condition (secondary), commonly rheumatoid arthritis (RA) or systemic lupus erythematosus (SLE). Sjögren syndrome may occur as part of a triad that includes primary biliary cirrhosis (PBC) and autoimmune thyroid disease. Patients with Sjögren's syndrome also have an overall increased risk for malignancies, specifically non-Hodgkin lymphoma and thyroid cancer. Sjogren's syndrome (SS) is a systemic disease in which loss of salivary gland and lachrymal gland function is associated with hypergammaglobulinemia, autoantibody production, mild kidney and lung disease and eventually lymphoma. SS involves dry eyes and dry mouth without systemic features that may be either primary or secondary to another autoimmune disease, such as SLE. Patients with SS and picked up at a late stage in their disease, after the salivary glands and lachrymal glands are already destroyed, because they are asymptomatic until that time. At this point, only symptomatic treatment can be offered for abnormal lachrymal and salivary gland function. The diagnosis for SS is currently at a crossroad with the American College of Rheumatology providing which requires characteristic autoantibodies (SS-A/SS-B) or minor salivary gland biopsy. Since lip biopsies are not frequently performed in clinical practice, there is increased emphasis placed on autoantibodies in diagnosis. The current Ro and La antibodies can delay the diagnosis by over 6 years. Recently novel antibodies have been identified: salivary gland protein 1 (SP-1), carbonic anhydrase 6 (CA6) and parotid secretory protein (PSP) using western blot methodology. Further studies have shown that the isotype differentiation of the markers adds to the sensitivity of diagnosis of SS. These autoantibodies occurred earlier in the course of the disease than antibodies to Ro or La. In addition antibodies to SP-1, CA-6 and PSP were found in patients meeting the criteria for SS who lacked antibodies to Ro or La. Furthermore, in patients with idiopathic xerostomia and xerophthalmia for less than 2 years, 76% had antibodies to SP-1 and/or CA6 while only 31% had antibodies to Ro or La. Antibodies to different isotypes (IgG, IgM & IgA of SP-1, CA6 and PSP are useful markers for identifying patients with SS at early stages of the disease or those that lack antibodies to either Ro or La.

The Ehrlichia Chaffeensis (IgG, IgM) panel is a critical diagnostic tool used for detecting Ehrlichiosis, a bacterial illness transmitted by ticks. This panel tests for both IgG and IgM antibodies against Ehrlichia chaffeensis, the bacterium responsible for the disease. The presence of IgM antibodies typically indicates a recent or acute infection, as these are the first antibodies to be produced in response to an infection. IgG antibodies, on the other hand, develop more slowly and can indicate a past infection or a more chronic stage of the disease. This dual testing approach allows for a comprehensive assessment of the infection's timeline, aiding in the accurate diagnosis and appropriate treatment planning. Ehrlichiosis can cause flu-like symptoms and, if left untreated, may lead to severe complications. Therefore, the Ehrlichia Chaffeensis (IgG, IgM) panel is essential for timely identification and management of the infection, particularly in areas where tick-borne diseases are prevalent. The test plays a significant role in enhancing patient care by facilitating early detection and intervention, underscoring the importance of accurate diagnostic tools in infectious disease management.

The Food Allergy Panel test measures immunoglobulin E (IgE) antibodies in the blood, which are produced in response to specific food allergens. This panel evaluates immune responses to the following foods: almond, cashew nut, codfish, cow's milk, egg white, hazelnut, peanut, salmon, scallop, sesame seed, shrimp, soybean, tuna, walnut, and wheat. If your antibody levels for peanut, milk, or egg are abnormal, additional component panels will be performed on the same sample to provide detailed protein information to share with your allergist. Food allergy reactions can range from mild discomfort to severe symptoms, often developing within minutes to hours of exposure. Identifying which allergens trigger these reactions is important. This panel may help determine whether you've had or currently have an allergic response to any of these food allergens. If you are experiencing any of the signs and symptoms listed below, this test may be beneficial for you. PLEASE NOTE This test reports the presence of IgE antibodies, but the results alone cannot confirm a diagnosis of food allergies. It’s important to follow up with your healthcare provider, who will evaluate your results in the context of your medical history, symptoms, medications, and other tests. Only a healthcare provider can diagnose an allergy and prescribe necessary treatment. You can buy this food allergy panel online through Quest without needing a doctor’s visit. Simply purchase the test, visit a nearby Quest location for sample collection, and receive your results quickly. This panel measures IgE antibody levels in response to common food allergens: Almond Cashew nut Codfish Cow's milk Egg white Hazelnut Peanut Salmon Scallop Sesame seed Shrimp Soybean Tuna Walnut Wheat IgE antibodies are normally found in small amounts in the blood, but larger amounts may indicate an overreaction to allergens, triggering the release of histamine and causing an allergic response. Certain foods are known to cause serious allergic reactions, including milk, egg, fish, shellfish, peanut, tree nuts, sesame seed, soybean, and wheat. Allergies may cause the following signs and symptoms, which should be discussed with your doctor for confirmation: Abdominal pain/cramps, diarrhea, nausea, or vomiting Rash, welts, hives, or eczema History of mild allergic reaction to a specific food Nasal congestion, wheezing, or mild difficulty breathing Runny nose Tingling, swelling, or itchiness of the mouth, throat, eyes, skin, lips, tongue, face, or other areas of the body This test may not be appropriate if you experience more severe symptoms. SEEK IMMEDIATE MEDICAL ATTENTION during your reaction. See a specialist for appropriate evaluation if you experience: Chest tightness Shortness of breath or constriction and tightening of the airways Swollen throat or the sensation of a lump in the throat making it hard to breathe or swallow Severe drop in blood pressure Rapid pulse Feeling faint, dizziness, or lightheaded Loss of consciousness Anaphylaxis (a potentially life-threatening reaction that can cause itching, hives, skin rash, swelling of the throat, lips, or tongue, and difficulty breathing, potentially leading to shock) Most allergic reactions occur within minutes, but some may develop hours after exposure. Reactions to allergens can vary from a stuffy nose to anaphylaxis. Anaphylactic shock occurs when blood pressure drops so severely that tissues and cells do not receive enough oxygen. Due to the potential severity of allergic reactions, it is essential to work with your healthcare provider to develop an optimal treatment and prevention plan.

The Hu Antibody Screen with Reflex to Titer and Western Blot (WB) panel is a specialized diagnostic test crucial for detecting paraneoplastic neurological syndromes, particularly small cell lung cancer-related disorders. This test is designed to identify Hu antibodies, which are indicative of an immune response where the body's immune system mistakenly attacks its own nervous system in reaction to a cancer. If initial screening is positive, the test reflexively proceeds to a titer to quantify the antibody levels and a Western Blot for confirmation. The presence of Hu antibodies is often associated with encephalomyelitis and sensory neuronopathy, making this test a vital tool in early cancer detection and managing complex neurological conditions.

The ImmunoCAP Specific IgE blood test, offered by Quest Diagnostics, is a highly specialized diagnostic tool used to detect specific IgE antibodies in the blood, which are associated with allergic reactions. This test is pivotal in the accurate identification of allergies to substances such as foods, pollens, molds, animal dander, and insect stings. Utilizing cutting-edge technology, the ImmunoCAP® system is renowned for its precision and sensitivity, making it a preferred choice among healthcare professionals for allergy testing. By measuring the concentration of specific IgE antibodies, the test provides valuable information that can assist in the diagnosis and management of allergic conditions, leading to personalized treatment plans and improved patient care. This detailed approach to allergy testing is integral in understanding individual allergic responses and in devising strategies for effective management and mitigation of allergy symptoms.

The Kappa/Lambda Light Chain, Free w/Ratio, Random Urine panel from Quest Diagnostics is a crucial diagnostic test for detecting and monitoring multiple myeloma and other disorders related to abnormal or excessive production of immunoglobulin light chains. This test measures the levels of kappa and lambda free light chains, along with their ratio, in urine. The precise quantification of these light chains and their ratio is essential for diagnosing conditions like light chain multiple myeloma or primary systemic amyloidosis. Quest Diagnostics, renowned for their advanced diagnostic technology and accuracy, ensures reliable results for this test, making it an invaluable tool for healthcare professionals in the early detection and management of these complex conditions. This test is also instrumental in monitoring the effectiveness of treatment regimens for patients with plasma cell dyscrasias, contributing significantly to patient care and outcomes.

This Quest Diagnostics test measures lactate (lactic acid) and pyruvate in blood and calculates the ratio between them. Both are products of how cells turn glucose into energy. When lactate is raised, the ratio can help guide the search for a cause, but it does not identify the cause by itself. "Filtrate" means the blood is treated straight after collection to remove proteins, which keeps the pyruvate stable. What the test measures: Lactic acid: rises when cells rely on energy production without oxygen. Pyruvate: the molecule that sits just before the mitochondria in glucose metabolism. Lactate/pyruvate (L:P) ratio: the key result for interpretation. How to read the results: The ratio is mainly useful when lactate is raised. It is used most in children and adults being assessed for inherited metabolic or mitochondrial disorders. With a high lactate, the ratio helps doctors decide whether to look first at the mitochondrial respiratory chain or at pyruvate metabolism. Cut-offs differ between labs, so use the interpretation on your own report. Raised lactate is far more often caused by intense exercise, poor circulation, sepsis, some medicines or a tight tourniquet than by an inherited disorder. Sample handling strongly affects results, so one abnormal value is usually repeated.

The Metals Acute Poisoning Panel, Blood (CSA) offered by Quest Diagnostics is a laboratory test designed to detect and measure the presence of various heavy metals in the blood, which can indicate acute poisoning. This panel includes the analysis of the following elements: Antimony Arsenic Bismuth Cadmium Chromium Cobalt Copper Mercury Molybdenum Nickel Selenium Thallium These elements are analyzed to assess potential exposure to toxic metals. The test is particularly useful for individuals who have been exposed to environments or substances containing these metals, as acute poisoning can lead to serious health issues. Symptoms of heavy metal poisoning vary depending on the specific metal involved but may include gastrointestinal distress, neurological symptoms, and organ dysfunction. If you suspect exposure to any of these metals, consulting a healthcare professional is essential. They can provide guidance on appropriate testing, interpretation of results, and potential treatment options.

The Mold Allergy Panel detects immunoglobulin E (IgE) antibodies in the blood, which are produced in response to specific mold allergens. This test evaluates immune responses to five common molds associated with allergies: Alternaria alternata, Aspergillus fumigatus, Candida albicans, Cladosporium herbarum, and Mucor racemosus. An allergic reaction to mold allergens can range from uncomfortable to severe. Mold exposure symptoms usually develop within a few minutes to a few hours. It is important to identify which allergens may trigger an allergic response. This panel can help determine whether you have had or currently have an allergic reaction to mold allergens. If you are experiencing any of the signs and symptoms listed in the "Signs & Symptoms" section below, this test may be for you. The test requires a blood sample to measure IgE antibody levels made by your immune system in response to common indoor and outdoor mold allergens, offering a quick and convenient way to test for multiple allergens simultaneously. There is no need to discontinue any allergy medications you're currently taking, and because it’s a blood test, there’s no exposure to allergens, thus eliminating the risk of severe allergic reactions—unlike with skin testing. The following molds are measured by this panel: Alternaria alternata: The most prevalent mold in dry, warm climates, Alternaria alternata has air spores that peak in the afternoon and typically disseminate in warm, dry air. It is often found in soil and on plants, cereal grains, grass, corn silage, rotten wood, bricks, canvas, iron, compost, and bird nests. Aspergillus fumigatus: This mold can grow both indoors and outdoors. Outdoors, it thrives in soil, decomposing leaves, bird droppings, compost, wood chips, hay, stored grains, and sweet potatoes. Indoors, it can be found on surfaces such as ventilation ducts, floors, walls, potted plants, household dust, and starchy foods like rice, cereal, and bread. Candida albicans: Known for causing fungal infections, Candida is often referred to as a yeast but is actually a type of fungus (mold). It can live in soil and organic debris but commonly resides on the skin, in the mouth, intestinal tract, and other moist areas of the body. Yeast can also be found in many foods. Cladosporium herbarum: Predominant in temperate climates, Cladosporium herbarum can grow both indoors and outdoors. Outdoors, it is found on plants, in soil, and on food. Indoors, it can be found in bathrooms, basements, and on surfaces such as window panes, insulation, fabrics, wood, wallpaper, carpets, upholstered furniture, faucets, and curtains. Mucor racemosus: Found in soil, plant debris, and dung, Mucor racemosus also grows indoors in house dust, mattresses, carpets, and ventilation ducts. IgE antibodies are normally present in small amounts in the blood, but larger quantities can indicate that the body is overreacting to allergens, causing it to produce histamine and trigger allergic reactions. Allergies may cause the following signs and symptoms: Sneezing Irritated eyes (swelling, redness, watering, scratchiness, itching, puffiness) Congestion Runny nose Itchy nose, ears, or mouth Headache Fatigue Increased asthma symptoms (coughing, wheezing, difficulty breathing) Rash, welts, hives, or eczema Nasal congestion, wheezing, shortness of breath, or slight trouble breathing This test may not be right for you if you experience more severe symptoms. SEEK IMMEDIATE MEDICAL ATTENTION during your reaction. See a specialist for further evaluation if you experience: Chest tightness Shortness of breath or constriction and tightening of the airways A swollen throat or the sensation of a lump in your throat that makes it difficult to breathe A severe drop in blood pressure Rapid pulse Feeling faint, dizzy, or lightheaded Loss of consciousness Please Note: While this test identifies IgE antibodies to mold allergens, the results alone do not confirm an allergy diagnosis. It’s essential to follow up with your healthcare provider, who will assess your results in the context of your medical history, symptoms, medications, and any other tests. Only a healthcare provider can diagnose an allergy and prescribe the necessary treatment.

Omega-3 and omega-6 fatty acids are polyunsaturated long chain fatty acids (PUFA) required by the body for proper functioning, normal growth and the formation of neural synapses and cellular membranes. Omega-3 and -6 fatty acids are considered “essential” and obtained primarily from dietary sources. Three of the most important omega-3 fatty acids are eicosapentaenoic acid (EPA), docosapentaenoic acid (DPA) and docosahexaenoic acid (DHA). Omega-3 fatty acids are primarily obtained from food sources. They have antioxidant, anti-inflammatory and anti-thrombotic effects, and can help to reduce triglyceride levels. Two of the most important omega-6 fatty acids are arachidonic acid (AA) and linoleic acid (LA). Omega-6 fatty acids are obtained from animal sources and plant oils, and have pro-inflammatory and pro-thrombotic properties at high levels. - Consumption of omega-3 fatty acids reduces the occurrence of major acute cardiac events in healthy individuals or patients with cardiovascular risk factors or who have cardiovascular disease. - Consumption of omega-3 fatty acids leads to a reduction in triglycerides and non-HDL, as well as Lp-PLA2 levels. - A high intake of omega-6 fatty acid precursors can interfere with the absorption of omega-3 fatty acids. The mean omega-6:omega-3 ratio of the standard American diet is approximately 10:1. A diet with an omega-6:omega-3 fatty acid ratio of 4:1 or less may reduce total mortality up to 70% over 2 years.

This test is intended for the diagnosis and monitoring of inherited disorders affecting multiple metabolic pathways. Organic acidurias are inherited disorders resulting from a deficient enzyme or transport protein. Although most are autosomal recessive disorders (= two copies of an abnormal gene must be present in order for the disease or trait to develop), several are X-linked. The more than 60 described organic acidurias affect many metabolic pathways including amino acid metabolism, lipid metabolism, purine and pyrimidine metabolism, the urea cycle, the Krebs cycle and fatty acid oxidation. These disorders are characterized by a wide variety of symptoms such as lethargy, coma, hypotonia, seizures, ataxia, vomiting, failure to thrive, developmental delay, liver disease, neutropenia, thrombocytopenia, osteomalacia and osteoporosis. Severity of presentation is highly variable as is age of onset, and patients may not present with the most characteristic features. Laboratory results commonly indicate metabolic acidosis, increased anion gap, hyperammonemia, hypoglycemia, lactic acidemia, ketosis, or abnormal lipid patterns. Treatment may be based on dietary restrictions and/or supplementation with cofactors (e.g., riboflavin or cobalamin) or conjugating agents (e.g., carnitine or sodium benzoate); however, there is no effective therapy for some of the disorders. Elevation of one or more organic acids is diagnostic for an organic aciduria; however, elevations should be interpreted in context with clinical findings and/or additional test results. Since many organic acidurias are episodic, the diagnostic efficacy is maximized when the patient is expressing symptoms at the time of specimen collection.

What is a paraneoplastic antibody panel? Paraneoplastic antibody panels look for autoantibodies associated with paraneoplastic neurologic syndromes (PNS). These are rare immune-driven conditions where the body’s immune response to a tumor accidentally targets parts of the nervous system (brain, spinal cord, peripheral nerves, neuromuscular junction, or cerebellum). This “Basic” evaluation is typically used as a screening tool in people with neurologic symptoms that are not explained by more common causes (stroke, infection, vitamin deficiency, structural lesions, etc.). Why this test may be ordered Clinicians may order this panel when symptoms suggest an autoimmune or paraneoplastic process, such as: Rapidly worsening coordination or gait problems (ataxia) Peripheral neuropathy (numbness, tingling, burning pain) Weakness, fatigue, or autonomic dysfunction Confusion, memory loss, mood/personality changes Seizures or encephalitis-like symptoms Vision changes or abnormal eye movements Because PNS can sometimes appear before a cancer is diagnosed, detecting a paraneoplastic antibody can prompt earlier cancer screening and treatment. What “with reflex titer/line blot” means This panel often follows a two-step approach: Initial screening for a set of paraneoplastic antibodies If positive or suspicious, the lab may reflex to: Titer testing, which estimates antibody concentration/strength Line blot (LB) confirmation, which improves specificity and reduces false positives Reflex testing helps clarify whether a positive signal is clinically meaningful or more likely to be nonspecific. How results are interpreted A positive result does not automatically mean cancer is present, and a negative result does not completely rule out a paraneoplastic syndrome. Interpretation depends on: Which antibody is present The strength/titer of the antibody The patient’s symptoms and exam findings MRI, EMG/NCS, EEG, spinal fluid results (CSF), and other autoimmune markers Whether symptoms are progressing quickly Some antibodies are considered more strongly associated with cancer or neurologic syndromes than others, and some results can be low-level positives that require cautious interpretation. What conditions can be associated with abnormal results Paraneoplastic antibodies may be associated with: Paraneoplastic encephalitis or limbic encephalitis Cerebellar degeneration (ataxia) Sensory neuronopathy / neuropathy Stiff-person spectrum disorders Myelopathy (spinal cord dysfunction) Neuromuscular junction disorders (in some contexts) They can also appear in non-cancer autoimmune neurologic disease, especially when symptoms fit but no tumor is found. What to do if results are abnormal If this panel is positive, common next steps include: Referral to neurology (often neuroimmunology) Targeted evaluation for underlying malignancy based on antibody pattern, age, sex, and risk factors Imaging such as CT chest/abdomen/pelvis, PET-CT, mammography, pelvic ultrasound, or testicular ultrasound (as appropriate) Additional autoimmune testing (CSF studies, MRI brain/spine, EMG/NCS) Treatment planning if autoimmune inflammation is suspected (often immunotherapy plus tumor treatment if found) Early diagnosis matters because paraneoplastic neurologic syndromes may respond best when treated quickly.

PFAS (Forever Chemicals) 9 Panel by Quest Diagnostics The PFAS (Forever Chemicals) 9 Panel by Quest Diagnostics is a comprehensive blood test designed to measure the levels of 9 specific PFAS chemicals in the body. PFAS, also known as "forever chemicals," are human-made substances that have been used in a variety of products since the 1940s. These chemicals are persistent in the environment and the human body due to their strong carbon-fluorine bonds, which makes them durable and resistant to heat, water, oil, and dirt. However, this same durability raises concerns as PFAS can accumulate in the environment and in human bodies over time. What Are PFAS and Why Are They a Concern? PFAS (pronounced "pea-fass") have been used in a range of products, including nonstick cookware, water-repellent clothing, firefighting foams, stain-resistant fabrics, and more. While these chemicals provide benefits such as durability and resistance, their persistent nature means they do not naturally break down and can accumulate in water, air, soil, and human blood. PFAS have been found in the blood of nearly everyone globally, and their widespread presence has raised concerns about their potential health risks. Research has linked elevated PFAS levels with an increased risk for several health conditions, including: Decreased immune system response Higher than normal cholesterol and lipid levels (dyslipidemia) Decreased growth in unborn babies and infants Increased risk of kidney cancer in adults While more research is needed to fully understand the long-term effects of PFAS exposure, studies from government agencies, including the National Academies of Sciences, Engineering, and Medicine (NASEM), have concluded there is sufficient evidence linking PFAS to these health risks. Key Features of the PFAS 9 Panel Purpose: The PFAS 9 Panel measures the levels of 9 common PFAS chemicals in the blood, providing insight into your overall PFAS exposure. Health Implications: Elevated PFAS levels may indicate long-term exposure and may be associated with an increased risk of health conditions, such as immune system dysfunction, dyslipidemia, growth issues in infants, and kidney cancer. Test Use: The test helps assess past exposure to PFAS but does not predict future health outcomes or identify specific exposure sources. CDC Recognition: The Centers for Disease Control and Prevention (CDC) acknowledges the value of PFAS blood testing conducted by CLIA-certified laboratories, such as Quest Diagnostics. What Will the Test Results Show? The PFAS 9 Panel will provide detailed results showing both the overall level of PFAS in your blood and the individual levels of each of the 9 PFAS chemicals tested. However, it is important to note that the test does not identify the source of exposure or predict future health conditions. Who Should Consider the PFAS 9 Panel? This test is particularly recommended for individuals who have had significant exposure to PFAS, such as: Workers exposed to PFAS-containing materials (e.g., firefighters using firefighting foam) People living near manufacturing plants, military bases, or other sites with known PFAS contamination Individuals with a history of using products containing PFAS, like nonstick cookware or water-repellent fabrics If you have elevated levels of PFAS, it is essential to discuss your results with a physician, as only a healthcare provider can diagnose any potential health conditions. Signs and Symptoms There are no immediate signs or symptoms of PFAS presence in the blood, and PFAS testing cannot predict future health impacts. While high levels of PFAS have been associated with certain health conditions, further studies are necessary to understand the full range of health implications. Next Steps If Your Results Are Elevated If your PFAS levels are higher than normal, it’s crucial to consult with a doctor. Only a physician can diagnose any health conditions that may arise from elevated PFAS exposure and recommend steps to reduce exposure. Conclusion The PFAS (Forever Chemicals) 9 Panel offers valuable information about the presence of PFAS chemicals in the body. By understanding your exposure levels, you can make informed decisions about managing health risks related to these persistent chemicals. Talk to your healthcare provider for further guidance based on your test results. This panel is not intended for use in diagnosing or treating diseases or conditions and should not be used for forensic purposes.

This Quest Diagnostics panel looks for antibodies in your blood that can attach to platelets, the cells that help blood clot. It is an indirect test. Your serum is tested for IgG, IgA and IgM antibodies that bind to test platelets. Why the test is ordered: When platelet transfusions fail to raise the platelet count as expected (platelet refractoriness). In pregnancy or in a newborn with a low platelet count, to look for antibodies passed from mother to baby (neonatal alloimmune thrombocytopenia). After a transfusion, when the platelet count drops sharply (post-transfusion purpura). Sometimes as part of the workup of an unexplained low platelet count. How to read the results: Results are usually reported as positive or negative for each antibody class. A positive result shows antibodies that react with platelets. It does not on its own show whether they are against your own platelets or someone else's. A negative result does not rule out an immune cause of a low platelet count. Results are read together with the platelet count, transfusion and pregnancy history, and any specialist platelet testing.

This Quest Diagnostics panel looks for autoantibodies against specific proteins on the surface of your own platelets. It is mainly used when doctors are investigating immune thrombocytopenia (ITP), a condition in which the immune system destroys platelets. The three platelet proteins tested: GP IIb/IIIa: the most common target of platelet autoantibodies. GP Ib/IX: the receptor that helps platelets stick to damaged blood vessel walls. GP Ia/IIa: a receptor that helps platelets bind to collagen. The two sample types: Eluate results: antibodies washed off your own platelets. This shows antibodies already bound to them (a direct test). Plasma results: antibodies circulating freely in the plasma (an indirect test). How to read the results: A positive eluate result supports an immune cause of a low platelet count. A negative result does not rule out ITP. Many people with ITP test negative, so ITP is still diagnosed mainly by excluding other causes. Positive results can also appear with some medicines, infections and other autoimmune conditions. Hematology guidelines do not recommend this test routinely, but it can help in unclear cases.

This test is used to analyze the protein content in urine. The proteins are separated into 5 major components: albumin, alpha-1, alpha-2, beta, and gamma. Interpretation of elevations, decreases, or visual changes in different components and/or associated patterns can provide information on various disease states, including inflammatory diseases, autoimmune diseases, different types of kidney injury, plasma cell disorders, and cancers. This panel is used to evaluate an individual with symptoms associated with potential monoclonal gammopathy, or when an individual has abnormally high total protein, albumin, or immunoglobulin levels. This test can help with initial diagnosis, as well as monitoring disease progression and treatment effectiveness. Although a 24-hour UPEP is recommended for diagnosis and monitoring, sometimes a random UPEP is ordered at the discretion of the clinician to help guide the diagnostic process in the right direction. One advantage of a UPEP is that no special handling is required, which may be an important factor depending on clinical conditions. Note: The results of this test should not be used in isolation; these results alone are not enough to make a diagnosis or for monitoring. UPEP results should be evaluated along with other laboratory, clinical, and imaging findings as appropriate. Additional testing, such as bone marrow studies, serum protein electrophoresis (SPEP), and immunofixation (IFE), may be required for comprehensive evaluation.

The test panel comprising Protein, Total and Protein Electrophoresis, 24 Hour Urine, and Immunofixation is an important diagnostic tool used in medical laboratories to assess and monitor various health conditions. The Total Protein test measures the total amount of protein in the urine over a 24-hour period and is crucial in evaluating kidney function and diagnosing kidney disorders. High levels of protein in urine, known as proteinuria, can indicate kidney damage or disease, as the kidneys are normally responsible for preventing excessive protein loss. Protein Electrophoresis, specifically in a 24-hour urine sample, separates proteins based on their size and charge. This test is vital for identifying the specific types of proteins being excreted, which can provide valuable insights into underlying health issues. For example, the presence of abnormal proteins, like Bence Jones protein, can be an indicator of multiple myeloma, a type of blood cancer. Immunofixation is another critical component of this panel. It is used to identify specific proteins, particularly immunoglobulins, in the urine. This test is particularly important in diagnosing and monitoring monoclonal gammopathies, conditions where a type of immune cell produces an abnormal amount of a single type of antibody. Immunofixation helps in differentiating between various types of monoclonal gammopathies, including multiple myeloma, Waldenström's macroglobulinemia, and others. Together, these tests provide a comprehensive overview of protein levels and types in the urine, assisting healthcare professionals in diagnosing and managing a range of disorders, especially those related to the kidneys and immune system. Abnormal results from these tests often necessitate further investigation to pinpoint the exact cause and determine the appropriate course of treatment. The synergy of these tests lies in their ability to offer both a broad and detailed view of protein metabolism and excretion, making them indispensable in modern clinical diagnostics.

The "Quest Diagnostics" category encompasses a wide array of medical laboratory tests and markers typically performed by Quest Diagnostics, a leading laboratory services provider. This category includes tests ranging from routine blood and urine analyses to more specialized diagnostic tests. These tests are crucial for detecting and monitoring various health conditions, including metabolic disorders, infectious diseases, cancer, and hormonal imbalances. Quest Diagnostics is known for utilizing advanced testing technologies and methodologies, ensuring accuracy and reliability in their results. This category serves as a comprehensive resource for individuals and healthcare providers looking to understand the various tests offered by Quest Diagnostics, aiding in early diagnosis, treatment planning, and ongoing health management.

Quest Diagnostics provides essential urine marker tests, which are vital for diagnosing and monitoring a range of health conditions. These non-invasive tests detect substances in urine that indicate diseases such as diabetes, kidney disease, and infections, as well as drug use. They are a key component of routine health screenings, aiding in early disease detection and treatment efficacy monitoring. The accuracy and reliability of these tests play a significant role in advancing personalized medicine, ensuring tailored and effective patient care.

The Ri Antibody Screen with Reflex to Titer and Western Blot is a diagnostic panel offered by Quest Diagnostics, designed to detect the presence of Ri antibodies in the blood. Ri antibodies are autoantibodies, meaning they are produced by the body's immune system against its own tissues, specifically targeting neuronal (nerve cell) proteins. The presence of these antibodies is associated with a group of conditions known as paraneoplastic neurological syndromes (PNS), which are rare disorders that can affect various parts of the nervous system. These syndromes often develop in people who have cancer, as the immune system's response to the tumor mistakenly attacks neurons, leading to neurological symptoms. The initial part of the test, the Ri Antibody Screen, uses an immunofluorescence assay (IFA) technique to detect antibodies. If this screening test is positive, indicating the potential presence of Ri antibodies, the test reflexes, or automatically proceeds, to additional testing methods, such as a titer and possibly a Western Blot. The titer quantifies the amount of antibodies present, providing an indication of the immune response's intensity, while the Western Blot confirms the specificity of the antibodies for the Ri antigen. This panel is particularly important for diagnosing PNS early, which can then prompt further investigation for an underlying cancer, if not already known. It helps in the management of the neurological symptoms and the underlying cause, aiming to improve the patient's quality of life and outcome. A comprehensive approach, involving this panel, allows healthcare providers to make informed decisions regarding diagnosis, monitoring, and treatment strategies for affected individuals.

Sensory-motor neuropathies may occur by various mechanisms. These include development of autoantibodies to neuronal structures such as myelin associated glycoprotein (MAG) antibody, Hu antibody, and the ganglioside antibodies. Sensory-motor neuropathies may also occur via antibody cross-reactivity or local immune complex deposition as seen in autoimmune disease with primarily non-neuronal targets including Sjogren's syndrome (SSA/SSB), systemic lupus erythematosus and related conditions (ANA IFA), celiac disease (tTG antibody), vasculitis (ANCA), and immune complex deposition (cryoglobulins, rheumatoid factor). Motor-sensory neuropathy may be associated with monoclonal gammopathy (serum immunofixation and serum immunoglobulins).

The Tree Nut Allergy Test Panel measures the levels of specific IgE antibodies in your blood to specific peanut and tree nut allergens. This panel measures responses to almond, Brazil nut, cashew nut, hazelnut, macadamia nut, peanut, pecan nut, pistachio, and walnut. This test reports the presence of lgE(s) antibodies to peanut and tree nut allergens, but the result by itself cannot confirm the presence of the allergy.

Dipstick urinalysis is important in accessing the chemical constituents in the urine and the relationship to various disease states. Microscopic examination helps to detect the presence of cells and other formed elements.

The YO AB Screen with Reflex to Titer and Western Blot (WB), Serum, is a specialized diagnostic panel primarily used for detecting paraneoplastic neurological syndromes, particularly in the context of suspected ovarian or breast cancer. This test screens for anti-Yo antibodies, which are associated with paraneoplastic cerebellar degeneration (PCD), a condition where the immune system, in response to a cancer, mistakenly attacks the central nervous system. If the initial screening is positive, the test reflexively proceeds to a titer to quantify the antibody levels and a Western Blot for further confirmation. The presence and level of anti-Yo antibodies can assist in diagnosing PCD and may also indicate an underlying malignancy, often before the cancer is clinically detectable. This makes the test a valuable tool for early cancer detection and managing associated neurological complications. The YO AB Screen with Reflex to Titer and WB is crucial for providing comprehensive care in oncology and neurology, reflecting the importance of integrated diagnostics in early detection and intervention for cancer-related neurological disorders.