A member asked:

Could a doctor please explain to me the difference between pt, ptt, and inr?

A doctor has provided 1 answer

PT, PTT, INR: PT or prothrombin time and INR or International Normalized Ratio are used to test the anticoagulant effect of warfarin, PTT or partial thromboplastin time is a more general test of adequacy of clotting factors.

Answered 5/25/2015

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