Book Factor V Blood Test Near Me

The Factor V Blood Test checks how well your blood can form clots by measuring factor V, a protein that helps stop bleeding. You might also hear it called a factor V activity test or a coagulation factor V assay. You can book this at participating labs on LabFinder and pick a time that works for you.

What is Factor V Blood Test and what does it show

This test, also called an F5 activity assay and coagulation factor V test, looks at the level or function of factor V in your blood. Low or poor factor V function can lead to longer bleeding. Very unusual results may be checked alongside other clotting tests for a full picture.

Who should get a Factor V Blood Test

Common reasons: easy bruising or frequent nosebleeds, bleeding longer than expected after dental work or surgery, a personal or family history of blood clots, or checking clotting problems linked with liver disease or vitamin K issues. Your doctor may order this test with PT, INR, or aPTT for more detail.

How long does a Factor V Blood Test take and what to expect

You will check in, confirm your lab order, and show ID. A phlebotomist cleans your arm, places a small needle in a vein, and draws a sample. A bandage is placed, and you can usually leave right away. Plan for about 15 to 30 minutes from arrival to finish.

Is a Factor V Blood Test safe and what are the risks

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.

How to prepare for a Factor V Blood Test

Medications: tell the lab about all medicines and supplements, especially blood thinners. Food and drink: fasting is not usually needed unless your doctor added other labs. Hydration: drink water so veins are easier to find. Activity: avoid very hard exercise right before your draw. Bring your photo ID, insurance card if using insurance, and any prior results. Always follow your doctor’s specific instructions.

Related conditions a Factor V Blood Test may help evaluate

Unexplained easy bruising, frequent nosebleeds, heavy periods, long bleeding after procedures, deep vein clots in the legs, lung clots, and liver problems that affect clotting proteins. Results are interpreted in context. Your doctor will review your numbers with your history and symptoms before advising next steps.

Tests similar to Factor V Blood Test and how they differ

  • PT and INR: show how long blood takes to clot overall, often used to monitor warfarin, not the specific factor V level.
  • aPTT: checks another part of the clotting pathway and screens for other factor issues.
  • Factor V Leiden genetic test: a DNA test for an inherited change linked to clots, not a measure of current factor V activity.

Book Factor V Blood Test using LabFinder

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. Cost and insurance: coverage varies by plan and provider, so check with your insurer or the lab. If you have questions about your results, your doctor can guide you on follow up testing or care.


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Medically Reviewed by Dr. Robert Segal, MD, FACC

Reviewed by: Dr. Robert Segal, MD, FACC

Board-Certified Physician

Last Updated: November 20, 2025

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.

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Frequently Asked Questions

  • Can I book a Factor V Blood Test near me?

    Booking a Factor V Blood Test is easy using LabFinder. Just choose your location and enter your insurance information to find the closest Factor V Blood Test near you.

  • How can I make a same-day appointment for a Factor V Blood Test?

    To make a same-day appointment for a Factor V Blood Test, just choose your location and your insurance information to find the closest Factor V Blood 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.

  • Where can I schedule a Factor V Blood Test?

    LabFinder allows you to easily schedule a Factor V Blood Test. You can search by location and insurance to easily book a Factor V Blood Test near you.

  • Can I make an appointment for Factor V Blood Test online?

    LabFinder allows you to easily make an appointment for a Factor V Blood Test online. To make an appointment for a Factor V Blood Test online, just choose your location and your insurance information to find the closest Factor V Blood Test near you.

  • Can I get a Factor V Blood Test without insurance?

    Yes, you can get a Factor V Blood Test without insurance. LabFinder allows you to search and select "Self-Pay" when booking a Factor V Blood Test. While pricing for the test may not be immediately available, please check by calling the lab company directly for pricing.

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