What are the major differences between Prothrombin Time (PT), Partial Thromboplastin Time (PTT), and International Normalized Ratio (INR)? They all seem to be associated with clotting time and or with association with "blood thinning" meds.

The prothrombin time (PT) is used, often along with a partial thromboplastin time (PTT), to help diagnose the cause of unexplained bleeding or inappropriate blood clots. The international normalized ratio (INR) is a calculation based on results of a PT and is used to monitor individuals who are being treated with the blood-thinning medication (anticoagulant) warfarin (Coumadin®).

Reference 1, Reference 2, Reference 3

Last Updated: 9 years ago in Cardiopulmonary

Login with Eistruttore

What are the major differences between Prothrombin Time (PT), Partial Thromboplastin Time (PTT), and International Normalized Ratio (INR)? They all seem to be associated with clotting time and or with association with “blood thinning” meds.