Prothrombin Time with INR

Prothrombin Time with INR

This test may help measure how long it takes for your blood to clot. A healthcare provider may use this to monitor medication in your blood if you are taking warfarin (a type of medication known as a blood thinner which can treat and prevent blood clots). Read more
Test details

Sample type:
Blood
Preparation:
You do not need to do anything special to prepare for the sample collection. This test does not require fasting.
Test type: In Person
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$39.00
+ $6.00 Physician Service Fee
Unfortunately this test is not right for you based on your responses.

What
What
Our PT/INR Test measures how long it takes for blood to clot.
Who
Who
Must be 18+ years of age to purchase.
How
How
Blood
Schedule an appointment, then visit a Quest Diagnostics patient service center location.
About the Test

Our Prothrombin Time with INR (PT/INR) Test measures how long it takes for your blood to form a clot (coagulate). Anticoagulants (anti-clotting medications) change the way your blood clots. Warfarin is a commonly prescribed anticoagulant, or blood thinner, that prevents blood from clotting. Anticoagulant therapy must be carefully monitored to make sure the dosage is right for the patient; otherwise, severe and persistent bleeding or excessive blood clotting (hypercoagulation) can occur.

How Does it Work?
Take an in-person test at a Quest Diagnostics location.
Over 2000+ locations focus on your safety, confidentiality and convenience.
1. Purchase your test
Schedule your appointment after purchasing a test to minimize wait time.
2. Visit a location
Enter your zip code to find a Quest Diagnostics location closest to you.
3. Get results online
We will email you when your confidential results are available. 

What to expect with Quest

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Easy to buy & simple to schedule

After your purchase, schedule an appointment at a nearby Quest Diagnostics location and have your specimen sample collected by a trained healthcare professional.

Fast online results, with support

Access test results from your phone as soon as they’re available, with the option to discuss your results with an independent physician at no extra cost.

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