Why is this marker being tested?
A factor VIII activity blood test lets doctors evaluate the functioning of a protein that helps blood to clot.
What is a clot?
A clot is a lump of blood that the body produces to prevent excessive bleeding by sealing leaks from blood vessels caused by wounds, cuts, scratches, or other conditions.
What is blood clotting and what are clotting factors?
Blood clotting is a process involving platelets (also called thrombocytes) and proteins called clotting factors. Platelets are oval-shaped cells made in the bone marrow. Most clotting factors are made in the liver. When a blood vessel breaks, platelets are first to the area to help seal the leak and temporarily stop or slow bleeding. But for the clot to become strong and stable, the action of clotting factors is required.
How are clotting factors numbered?
The body's clotting factors are numbered using the Roman numerals I through XII. They work together in a specialized sequence, almost like pieces of a puzzle. When the last piece is in place, the clot develops — but if even one piece is missing or defective, the puzzle can't come together.
Where is Factor VIII involved in the blood clotting process?
Factor VIII, with factor IX, is involved in the last step of the clotting process — the creation of a "net" that closes a torn blood vessel.
What is hemophilia A?
Under normal circumstances, certain proteins, including factor VIII, come together to form blood clots and quickly stop bleeding.
When an abnormal gene causes a person to be deficient in factor VIII, the result is a bleeding disorder known as hemophilia A. A factor IX deficiency is known as hemophilia B. Both conditions are usually hereditary, but also can occur spontaneously. Hemophilia A is the most common severe bleeding disorder. In hemophilia A, blood doesn't clot as it should. This puts a person at risk of uncontrolled bleeding.
-------------------------
Note: Test results may vary depending on your age, gender, health history, the method used for the test, and other things. Your test results may not mean you have a problem. Ask your healthcare provider what your test results mean for you.
Test results are usually reported as a percentage of a "normal" result of 100%. Normal ranges for factor VIII levels are 50% to 150%.
Keeping track of your medical data and laboratory results while understanding what they mean empowers positive health outcomes.
Keeping track of your medical data and lab results while understanding what they mean empowers positive health outcomes.
Save 10% off any plan with promo-code:
HEALTH10
Increased Factor VIII Activity may be due to:
- Older age
- Diabetes
- Liver disease
- Inflammation
- Pregnancy
- Obesity
-----------------------
Factor VIII levels are elevated at birth and increase during pregnancy. Factor VIII is an acute phase reactant with levels that rise during periods of acute stress, following surgery, and in inflammatory conditions. Levels can also increase as the result of strenuous exercise or the administration of several drugs including epinephrine, DDAVP, or estrogen (for birth control or hormone replacement therapy). Factor VIII levels can be elevated in a number of clinical conditions including carcinoma, leukemia, liver disease, renal disease, hemolytic anemia, diabetes mellitus, deep vein thrombosis, and myocardial infarction.
Persistent elevation of factor VIII above 150% is associated with an increased risk for venous thrombosis of more than fivefold. Elevated factor VIII is also associated with an increased risk for recurrence of venous thromboembolism. Risk is graded such that the higher the factor VIII activity, the higher the risk. The basis for this increased risk is not well understood as genetic studies of the factor VIII and von Willebrand factor genes failed to identify a genetic basis for this increased risk. Values >150% are observed in 20% to 25% of individuals with venous thrombosis or thromboembolism in the absence of other known causes of factor VIII elevation.
Sign up
Sign up now and create your account. Use code HEALTH10 for a 10% discount on any plan. Don't miss out!
Organize
Bring all results from any laboratories to your account. You can enter your tests yourself, or we'll be happy to organize your files—whether in PDF, JPEG, CSV, or even screenshots.
Learn and improve
Once your information is stored in your account, dive into a wealth of insights about your results. If you have any more questions, we are here to answer them.
If your factor VIII protein levels are low, you may have hemophilia A. Almost all people with hemophilia A are male. Women are generally only carriers of the gene and have a 50% chance of passing it on to each of their children. (Boys who receive the gene would be affected and girls would be carriers). But it's possible for females to develop mild symptoms of this disorder.
You may need this test if you have a family history of the disorder or if you have one or more of these symptoms:
- Prolonged and unexplained bleeding after minor cuts, surgeries, or dental procedures
- Easy bruising
- Slow wound healing because of repeated bleeding or infection
- Joint pain and stiffness
- Swollen, hot joints or deformities
- Heavy menstruation
- Severe low back pain, usually on one side
- The need for a blood transfusion after a minor injury
You may also have this test if you have abnormal results from other blood tests that measure how well your blood clots.
---------------
Decreased Factor VIII Activity may be due to:
- Hemophilia A (a bleeding disorder caused by a lack of blood clotting factor VIII)
- Disorder in which the proteins that control blood clotting become overactive disseminated intravascular coagulation (DIC)
- Presence of a Factor VIII inhibitor (antibody)
- Von Willebrand disease (another type of bleeding disorder)
Guiding our user for 10 years to promptly understand, track, and act on their laboratory results.
$15/month
for personal lab results
Cancel your subscription at any time.
$250/once
full premium version
$45/month
track your clients’ labs
Cancel your subscription at any time.
Guiding our user for 10 years to promptly understand, track, and act on their laboratory results.
Personal plans
track personal results
Professional Plan
track multiple client's results
$15/month
for personal lab results
$250/once
own it for life
$45/month
for health professionals
Complete Plan
Unlimited Plan
$15 per month
$250 full version
Are you a health professional?
Level up your lab report analysis with our Pro plan, built for health practitioners like you.
Health Business Account
$45/month
Cancel your subscription at any time.
Unlock additional Pro plans when you sign up.
Unlock Your Health Journey with Healthmatters.io! Ever wished for a one-stop digital health haven for all your lab tests? Look no further! Healthmatters.io is your personalized health dashboard, bringing together test reports from any lab. Say goodbye to scattered results—organize and centralize your lab data effortlessly. Dive into the details of each biomarker and gain insights into the meaning behind your medical test data.
Join the community of thousands who've transformed the way they understand their lab results. Experience the joy of having all your lab data neatly organized, regardless of where or when the tests were done.
For our professional users, Healthmatters.io is a game-changer. Revel in the intuitive tools that not only streamline analysis but also save valuable time when delving into your client's lab report history. It's not just a dashboard; it's your gateway to a smarter, more informed health journey!
Healthmatters.io personal account provides in-depth research on 4000+ biomarkers, including information and suggestions for test panels such as, but not limited to:
You can combine all test reports inside your Healthmatters account and keep them in one place. It gives you an excellent overview of all your health data. Once you retest, you can add new results and compare them.
If you are still determining whether Healthmatters support your lab results, the rule is that if you can test it, you can upload it to Healthmatters.
While we do talk about popular labs, we welcome reports from lots of other places too. It's as simple as this: if you can get a test done, you can upload it to Healthmatters. We can interpret results from any lab out there. If laboratories can analyze it, we can interpret it.
Still on the hunt for a specific biomarker? Just tell us, and we'll add it to our database. Anything from blood, urine, saliva, or stool can be uploaded, understood, and tracked with your Healthmatters account!
There are two ways to add your test reports to your healthmatters.io account. One option is to input the data using the data entry forms. The other method is to utilize our "Data entry service."
Our data entry forms offer an easy, fast, and free way for you to input the reports yourself. Self-entry allows you to add an unlimited number of reports at no cost. We make the self-entry process user-friendly, providing dozens of templates that pre-populate the most popular laboratory panels and offering instant feedback on entered values.
For those who prefer assistance, we offer a "Data entry service" to help you input your data. Simply attach an image or file of your lab test results, and a qualified team member from our data entry team will add the results for you. We support various file types, including PDFs, JPGs, or Excel. This service is particularly useful if you have many reports to upload or if you're too busy to handle the data entry yourself.
Our special data entry service makes it easy to add your results to your private dashboard. Just attach an image or a file of your lab test results, and our skilled data entry team will do the work for you. It's all done by humans, ensuring that your data is entered accurately and with personal care for each client.
Depending on your account, the data entry service can be included for free or come at an additional cost of $15 per report.
For users on the Complete monthly plan, the first report is entered free of charge, and each additional report incurs a fee of $15.
Unlimited account holders enjoy the entry of ten reports without charge. Subsequent reports are subject to a $15 fee per report.
Additionally, users on the Complete plan can upgrade to a yearly subscription from the account settings. The annual subscription includes a data entry service for five reports.
The Unlimited plan is a one-time purchase for $250, and it covers your account for a lifetime with no additional payments.
For the Complete plan, the cost is $15 per month. You have the flexibility to cancel it anytime through your account settings, ensuring no further payments. To avoid charges, remember to cancel at least a day before the renewal date. Once canceled, the subscription remains active until the end of the current billing cycle.
Additionally, you can upgrade to the yearly Advanced plan from within your account. The annual cost is $79, and it comes with a data entry service for five reports.
You can always upgrade to a lifetime version with a prorated price from a monthly or yearly subscription.
Simply log in and navigate to your account settings to cancel your subscription. Scroll down to locate the 'Cancel' button at the bottom of the page. Ensure you cancel at least one day before the renewal date to prevent any charges. Once cancellation is requested, the subscription remains active until the conclusion of the current billing cycle.
Unlocking the insights from your lab tests has never been this intuitive! We've crafted multiple ways for you to navigate your data, whether you're glancing at a single report or delving into a treasure trove of testing data.
1. Graph View:Dive into a visual journey with our biomarker graphs, showcasing over 40 data points. Combining years of results unveils trends, empowering you to make informed decisions. Our visualization tools make it a breeze to compare and understand changes over time, even if your results are from different labs. A search function and filters simplify the exploration of extensive data, allowing you to focus on what needs attention.
2. All Tests ViewGet a quick grasp of your test reports in minutes! Explore neatly organized reports on a timeline, highlighting crucial details like dates, critical results, and lab/panel names. Each report opens up to reveal in-depth descriptions and additional recommendations for each biomarker. The history of previous results is just a click away, and you can download a comprehensive report for deeper insights. Color-coded and user-friendly, it's designed for easy reading, understanding, and navigation.
3. Table View:For a holistic view of all biomarkers side by side, our table view is your go-to. Results are neatly displayed in a categorized and dated table, ideal for those with an extensive test history. Utilize sorting, filters, and color-coding to enhance your analysis and gain extra insights.
Experience the power of clear, organized data visualization with Healthmatters.io — your key to understanding and taking charge of your health journey!
Yes, you can download information from your account. We can compile your labs into a CSV file. To download all your labs, you can go to Account Settings, and at the bottom of the page, you will find a link to download your information.
Yes, you can print your report. To do so, navigate to "All tests" and open the report you wish to print. You'll find a print button in the right corner of the report. Click on it, and your browser's print window will open. If you prefer to print in a bigger typeface, adjust the scale using the print window settings.
A personal account is all about keeping your own lab test results in check. It's just for you and your personal use.
The professional or business account is designed for health professionals who wish to track and organize their clients' laboratory results.
To learn more about Healthmatters Pro, please refer to the professional page.
At HealthMatters, we're committed to maintaining the security and confidentiality of your personal information. We've put industry-leading security standards in place to help protect against the loss, misuse, or alteration of the information under our control. We use procedural, physical, and electronic security methods designed to prevent unauthorized people from getting access to this information. Our internal code of conduct adds additional privacy protection. All data is backed up multiple times a day and encrypted using SSL certificates. See our Privacy Policy for more details.
11dhTxB2/Creatinine (AspirinWorks), Absolute Reticulocytes, Alpha-1 Antitrypsin Phenotype, Alpha-1-Antitrypsin, Serum, Ammonia, Angiotensin-1-Converting Enzyme, Beta-2 Glycoprotein I Ab, IgA, Beta-2 Glycoprotein I, IgG, Beta-2 Glycoprotein I, IgM, Bicarbonate (HCO3), Serum, Blood Type, C-Reactive Protein (CRP), C-Reactive Protein, Cardiac, Copper, Serum or Plasma, D-Dimer, D-Dimer, Quantitative, Delta Aminolevulinic Acid, Urine, 24 Hour, Erythropoietin (EPO), Serum, F2-Isoprostane, Factor IX Activity, Factor V Leiden Mutation, Factor VII Activity, Factor VIII Activity, Factor X Activity, Factor XI Activity, Ferritin, Ferritin (female range), Fibrinogen Activity, Fibrinogen Antigen, Glucose 6-Phosphate Dehydrogenase (G6PD), Quantitative, Glutathione; Erythrocytes, Haptoglobin, Hemoglobin A, Hemoglobin F, Immatue Reticulocyte Fraction, Immature Platelet Fraction, Immature Retic Fraction, Iron, IRON (Serum), Lactate Dehydrogenase (LDH or LD), Large Unstained Cells (LUC), Large Unstained Cells (Percent), Macrocytosis, Magnesium, RBC, Nucleated RBC (NRBC) (%), Nucleated red blood cell (NRBC), OxPL-apoB1, Plasminogen Activator Inhibitor 1 (PAI-1) Activity, Platelet Ab, Indirect (IgA), Platelet Ab, Indirect (IgG), Platelet Ab, Indirect (IgM), Plateletcrit (PCT), Polychromasia, Porphobilinogen Deaminase, Whole Blood, Porphyrins, Total Serum, PTT-LA Screen, Retic Hgb Equivalent, Reticulocyte Count, Reticulocyte hemoglobin, Reticulocyte, Absolute, Sickle Cell Screen, Stomatocytes, Thrombin Antithrombin Complex, Thrombocytes, Total iron-binding capacity (TIBC), Transferrin, Transferrin Receptor, Transferrin saturation (Iron Saturation), UIBC