Protein C is a protein in your blood that plays a crucial role in preventing blood clot formation. It is one of the natural anticoagulants your body produces to balance the clotting process. A Protein C Antigen test measures the amount of protein C in your blood, which helps determine if you have a deficiency or excess of this protein. This test is particularly significant for individuals with a history of abnormal clot formation or a family history of clotting disorders.
The test works by measuring the antigenic level of protein C - that is, the quantity of the protein present, regardless of its functionality. It is worth noting that a normal protein C antigen level does not necessarily mean the protein is functioning correctly, and additional tests may be required to confirm its activity.
Test NameProtein C Antigen
Sample TypeBlood
Preparations RequiredThere are no specific instructions for this test. Regular eating and drinking habits can be maintained.
Report Time5 Days
Why do I need a Protein C Antigen test?
Your doctor may recommend a Protein C Antigen test if you have a history of unexplained blood clotting events, repeated miscarriages, or if there is a known history of Protein C deficiency in your family. The test can help identify a deficiency of Protein C, which can make you more prone to developing blood clots.
Is fasting required for a Protein C Antigen test?
No, fasting is not required for a Protein C Antigen test. You can continue with your regular eating and drinking habits unless instructed otherwise by your healthcare provider.
Home Sample Collection Process
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Book your convenient slot
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Sample Collection by Phlebotomist
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Reporting of the sample at lab
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Frequently Asked Questions
The test is performed using a blood sample, which is obtained through a routine blood draw. The sample is then analyzed in a laboratory to measure the Protein C Antigen level.
Elevated levels of Protein C are generally not a concern as they do not increase the risk of blood clots. However, they could reflect the body's response to excessive clotting and may be seen in conditions like disseminated intravascular coagulation (DIC).
Low levels of Protein C can increase your risk of developing abnormal blood clots. It may be due to inherited Protein C deficiency, liver disease, vitamin K deficiency, or conditions like DIC.
The frequency of testing depends on your health history, family history, and your doctor's recommendation. If you have a known Protein C deficiency or if you've had previous episodes of abnormal clotting, your doctor may recommend regular testing.
Normal values for Protein C can vary depending on the laboratory, but they typically range from 70 to 130% of normal. Your doctor will interpret your results based on the lab's reference range.
There are no special precautions needed before undergoing a Protein C Antigen test. It's always a good idea to inform your healthcare provider about any medications or supplements you're taking as they may influence the test results.
Various factors can affect the test results including certain medications, pregnancy, recent blood clotting episode, liver disease, and vitamin K status.
If your Protein C Antigen test results are abnormal, you should consult a hematologist or a physician experienced in managing blood disorders. They can guide you on the next steps and potential treatments.
The Protein C Antigen test is a simple blood test, and the risks associated with it are very minimal. They may include slight pain or bruising at the site where the needle was inserted.
No, this test itself does not diagnose a blood clot. It helps identify a deficiency of Protein C, which could increase your risk of developing blood clots.
Protein C levels cannot be improved through diet or lifestyle changes. If you have a Protein C deficiency, your doctor might recommend anticoagulant therapy to reduce your risk of blood clots.
Yes, certain medications, especially anticoagulants like warfarin, can affect Protein C levels. Always let your healthcare provider know about any medication you're taking.
The Protein C Antigen test measures the quantity of Protein C in the blood, while the Protein C Activity test evaluates the protein's functionality. Having a normal amount of Protein C (antigen) does not necessarily mean the protein is functioning correctly (activity), and both tests may be ordered to assess the risk of abnormal clot formation.
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