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The Protein C Test checks how well your blood’s natural clot control system is working. You may also see it called a Protein C activity test or Protein C antigen test. If your doctor ordered it, you can book at participating labs on LabFinder.
A Protein C activity test or Protein C antigen test measures the level or function of Protein C, a protein that helps prevent too much clotting. Low level or low activity can raise the chance of forming blood clots.
Common reasons: a personal or family history of blood clots like DVT or PE, clots at a young age, repeated pregnancy losses, unusual clot locations, or testing after a clot to look for an inherited or acquired cause. Doctors may also check Protein C during workups for liver or vitamin K problems.
Quick visit: plan about 10 to 20 minutes at the lab. You will check in, confirm your name and date of birth, and have a small blood sample taken from your arm. A bandage is placed and you can usually return to normal plans right away.
Yes, this is a quick, routine blood draw and is considered very safe. You might feel a quick pinch, notice a small bruise, or feel a little lightheaded for a moment afterward, but those effects usually fade quickly. Be sure to tell the staff if you take blood thinners, have a bleeding disorder, or if you have fainted during blood draws before. They will take extra care to keep you comfortable.
Ask about medicines: some drugs, like warfarin, can lower Protein C and may affect results. Follow your doctor’s advice on timing. Share health changes: recent clots, illness, or pregnancy can affect testing. Stay hydrated: drinking water can help with the blood draw. No special diet unless told: you do not usually need to fast. Bring records: bring a list of all medicines and supplements. If you had recent tests, bring those too.
Deep vein thrombosis in the leg, pulmonary embolism in the lung, repeated miscarriages that may be clot related, liver disease that can lower Protein C, vitamin K deficiency, and rare inherited Protein C deficiency. Results are always read in context. Your doctor will review your numbers along with your history and symptoms before recommending any next steps.
With LabFinder, you can compare locations, see time slots, and book online at participating labs. It is easy to search for a convenient location in your area or by city or ZIP. Coverage varies by plan and provider, so check with your insurer and the lab when you schedule.
Book on LabFinder: find a lab today on our lab finder and request a test doctor guided.
The information on this page and throughout the LabFinder website and mobile app is for general informational purposes only. It is not intended to serve as medical advice, diagnosis, or treatment. For personalized medical advice or specific health concerns, please consult your healthcare provider directly.
Booking a Protein C Test is easy using LabFinder. Just choose your location and enter your insurance information to find the closest Protein C Test near you.
To make a same-day appointment for a Protein C Test, just choose your location and your insurance information to find the closest Protein C Test location near you. If there's availability for a same-day appointment at a nearby lab location, then you will be able to book it easily through LabFinder.
LabFinder allows you to easily schedule a Protein C Test. You can search by location and insurance to easily book a Protein C Test near you.
LabFinder allows you to easily make an appointment for a Protein C Test online. To make an appointment for a Protein C Test online, just choose your location and your insurance information to find the closest Protein C Test near you.
Yes, you can get a Protein C Test without insurance. LabFinder allows you to search and select "Self-Pay" when booking a Protein C Test. While pricing for the test may not be immediately available, please check by calling the lab company directly for pricing.
