APTT

Alternative names 
Partial thromboplastin time (PTT); PTT; Activated partial thromboplastin time

Definition
This is a test that measures clotting time in plasma (the liquid portion of blood). It focuses on a specific pathway in the blood clotting process.

Also check Partial thromboplastin time (PTT).

Johns Hopkins patient information

Last revised: December 4, 2012
by Janet G. Derge, M.D.

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