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PT/INR is a simple blood test that checks how fast your blood clots. You may also hear it called a Prothrombin Time test, an INR test, or a PT blood test. The visit is usually quick, about 10 to 20 minutes at the site. You can book at participating labs on LabFinder and pick a time that fits your day.
The Prothrombin Time and INR test, also called PT, PT test, or INR, measures how long it takes your blood to clot. It helps your care team see if blood thinners like warfarin are working as planned and can also give clues about liver health or vitamin K levels.
Common reasons include regular checks while taking warfarin, a review for easy bruising or bleeding, a check before a procedure, or a look at clotting problems linked to liver disease or vitamin K changes. If you are not sure this test is right for you, please ask your doctor.
You check in and show your ID. A phlebotomist cleans a small area on your arm and takes a small tube of blood. You may feel a quick pinch. A bandage goes on and you can head out. Most visits take 10 to 20 minutes. Results are sent to your ordering provider, and many labs share them in your online account.
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, a rash or infection where blood will be drawn, or if you have fainted during blood draws before. They will take extra care to keep you comfortable. Tell your doctor if you recently missed a warfarin dose or changed your dose, since that can affect the number.
Wear a short sleeve top or loose sleeves for easy access to your arm. Drink water so your veins are easy to find. Take your regular medicines unless your doctor gives you different instructions. Bring a list of all medicines and supplements, including warfarin and any vitamin K products. Try to keep your usual diet the day before and the day of testing unless your doctor says otherwise.
This test can help with monitoring warfarin treatment, checking liver disease, looking for vitamin K problems, reviewing easy bruising or bleeding, and assessing clotting issues during illness or before a procedure. Results need context. Your doctor will review your numbers along with your history and symptoms before sharing next steps.
aPTT looks at a different part of the clotting pathway and is often used for heparin monitoring. Anti Xa testing measures the effect of certain blood thinners like heparin or some low molecular weight heparins more directly. A platelet count checks the number of platelets, which are cell fragments that help form clots, but it does not measure clotting time.
You can compare locations, see real time slots, and book online at participating labs. Find options nearby, in your area, or by city or ZIP. Coverage varies by plan and provider, so please check your benefits before you go. LabFinder makes scheduling simple so you can stay on track with your care.
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 Prothrombin Time and INR (PT/INR) Test is easy using LabFinder. Just choose your location and enter your insurance information to find the closest Prothrombin Time and INR (PT/INR) Test near you.
To make a same-day appointment for a Prothrombin Time and INR (PT/INR) Test, just choose your location and your insurance information to find the closest Prothrombin Time and INR (PT/INR) 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 Prothrombin Time and INR (PT/INR) Test. You can search by location and insurance to easily book a Prothrombin Time and INR (PT/INR) Test near you.
LabFinder allows you to easily make an appointment for a Prothrombin Time and INR (PT/INR) Test online. To make an appointment for a Prothrombin Time and INR (PT/INR) Test online, just choose your location and your insurance information to find the closest Prothrombin Time and INR (PT/INR) Test near you.
Yes, you can get a Prothrombin Time and INR (PT/INR) Test without insurance. LabFinder allows you to search and select "Self-Pay" when booking a Prothrombin Time and INR (PT/INR) Test. While pricing for the test may not be immediately available, please check by calling the lab company directly for pricing.
