protime w/ inr
HematologyBlood sampleResults 24 hrsNo fasting
Protime w/ INR
Measures how long your blood takes to clot and reports an INR value. Often used to monitor blood-thinning treatment.
Sample
Blood
Results
24 hrs
Fasting
Not required
Follow-up
Optional add-on
What this test detects
Prothrombin time / INR
Clot-based coagulometry
Seconds / INR
When to get this test
Blood thinner monitoring
The INR is commonly used to monitor people taking warfarin and similar blood-thinning medicines.
Clotting assessment
Helps evaluate how well part of your blood's clotting system is working.
Bleeding work-up
Useful when investigating unexplained or prolonged bleeding.
How to prepare
01
No special preparation needed.
Common questions
What is INR used for?
INR is a standardized way to report clotting time, most often to guide blood-thinner dosing.
Should I take my blood thinner before the test?
Please follow the instructions of the doctor managing your medication regarding timing before the test.