Arterial Blood Gas Analysis (ABG)

to assess the respiratory function and conditions that affect the lungs and oxygenation.

Base Excess (ECF) - Arterial on Labcorp's Arterial Blood Gas (ABG) Panel The Base Excess (ECF) - Arterial marker on Labcorp's Arterial Blood Gas (ABG) Panel quantifies the amount of acid or base required to restore a liter of arterial blood to a normal pH of 7.40 at a PaCO2 of 40 mmHg and a temperature of 37C. This value reflects the metabolic component of acid-base balance, independent of respiratory influences. Clinical Significance Positive Base Excess: Indicates metabolic alkalosis, where there is an excess of base or a deficit of acid in the blood. Negative Base Excess: Suggests metabolic acidosis, characterized by an excess of acid or a loss of base. Base Excess (ECF) is particularly useful in assessing the severity of metabolic disturbances and guiding therapeutic interventions, such as the administration of bicarbonate in cases of significant acidosis. Interpretation Considerations While Base Excess (ECF) provides valuable information about the metabolic component of acid-base status, it should be interpreted alongside other ABG parameters, such as pH, PaCO2, and bicarbonate levels, to obtain a comprehensive understanding of the patient's acid-base balance. Additionally, clinical context and other laboratory findings are essential for accurate diagnosis and management.

Glucose - Arterial on Labcorp's Arterial Blood Gas (ABG) Panel The Glucose - Arterial marker on Labcorp's Arterial Blood Gas (ABG) Panel measures the concentration of glucose in arterial blood. Glucose is a primary energy source for the body's cells and is tightly regulated by hormones such as insulin and glucagon. Monitoring glucose levels is essential for assessing metabolic status and diagnosing conditions like diabetes mellitus and hypoglycemia. Normal Reference Range The normal reference range for arterial glucose levels varies by age: Neonates (<30 days): 40–90 mg/dL Infants (30 days–3 years): 60–100 mg/dL Children and adults (>3 years): 65–100 mg/dL Critical values are: Neonates: <40 or >200 mg/dL Infants and older children/adults: <50 or >500 mg/dL Clinical Significance Abnormal glucose levels can indicate various health conditions: Elevated Levels (Hyperglycemia): May suggest diabetes mellitus, stress response, or endocrine disorders. Decreased Levels (Hypoglycemia): Can result from insulin overdose, adrenal insufficiency, or prolonged fasting. Arterial glucose measurements are particularly useful in critical care settings for real-time monitoring of a patient's metabolic status.

HCO3- - Arterial on Labcorp's Arterial Blood Gas (ABG) Panel The HCO3- - Arterial marker on Labcorp's Arterial Blood Gas (ABG) Panel measures the concentration of bicarbonate ions (HCO3-) in the arterial blood. Bicarbonate plays a crucial role in maintaining the acid-base balance of the body, functioning as a buffer to regulate the pH of blood. It helps neutralize excess acids or bases, thus stabilizing the body’s pH levels. HCO3- is closely linked with the respiratory system's ability to excrete CO2 and the kidneys' ability to excrete or retain bicarbonate, making it a key indicator of both metabolic and respiratory health. Clinical Significance Elevated HCO3- (Metabolic Alkalosis): High levels of bicarbonate can occur in conditions such as chronic vomiting, excessive antacid use, or kidney disease. It indicates that the body is retaining bicarbonate or losing acids, leading to alkalosis. Decreased HCO3- (Metabolic Acidosis): Low bicarbonate levels are commonly seen in metabolic acidosis, a condition where the body accumulates too much acid. Causes include diabetic ketoacidosis, kidney disease, or severe diarrhea, all of which disrupt the body's acid-base balance. In clinical practice, measuring bicarbonate levels in conjunction with other ABG parameters like pCO2 and pH helps healthcare providers assess the underlying cause of acid-base imbalances and tailor appropriate treatments.

active, unbound form of calcium

Lactate - Arterial on Labcorp's Arterial Blood Gas (ABG) Panel The Lactate - Arterial marker on Labcorp's Arterial Blood Gas (ABG) Panel measures the concentration of lactate in arterial blood. Lactate is a byproduct of anaerobic metabolism, which occurs when cells rely on processes that do not require oxygen to produce energy, often due to insufficient oxygen supply or impaired oxygen utilization. Elevated lactate levels are commonly associated with tissue hypoxia or poor perfusion, where tissues do not receive enough oxygen to meet their metabolic demands. High lactate levels can indicate a variety of conditions, including shock, sepsis, severe hypoxia, or organ failure. In some cases, elevated lactate can also result from metabolic disorders or certain medications. Monitoring lactate levels is crucial in critically ill patients to assess the severity of acidosis, identify underlying conditions, and guide appropriate treatment strategies.

pCO2 - Arterial on Labcorp's Arterial Blood Gas (ABG) Panel The pCO2 - Arterial marker on Labcorp's Arterial Blood Gas (ABG) Panel measures the partial pressure of carbon dioxide (CO2) in arterial blood. pCO2 is an important indicator of lung function and the body’s ability to remove CO2, a byproduct of metabolism. It plays a key role in regulating blood pH through the bicarbonate buffer system. Abnormal levels of pCO2 can indicate respiratory or metabolic issues: elevated levels (hypercapnia) suggest hypoventilation or respiratory failure, while decreased levels (hypocapnia) may indicate hyperventilation or respiratory alkalosis. Monitoring pCO2 levels helps clinicians assess respiratory efficiency, acid-base balance, and potential underlying conditions such as chronic obstructive pulmonary disease (COPD), asthma, or kidney dysfunction.

Potassium - Arterial on Labcorp's Arterial Blood Gas (ABG) Panel The Potassium - Arterial marker on Labcorp's Arterial Blood Gas (ABG) Panel measures the concentration of potassium ions (K+) in the arterial blood. Potassium is a critical electrolyte that plays a key role in maintaining cell function, nerve transmission, and muscle contraction. It is also essential in regulating the body's acid-base balance and controlling the electrical activity of the heart. Abnormal potassium levels can indicate a range of conditions: elevated levels (hyperkalemia) may suggest kidney dysfunction, acidosis, or cellular injury, while low levels (hypokalemia) can occur due to conditions like excessive diuretic use, alkalosis, or gastrointestinal losses (e.g., vomiting, diarrhea). Monitoring arterial potassium levels is crucial for assessing overall electrolyte balance, cardiac health, and metabolic function.