activated partial thromboplastin time
Last reviewed 01/2018
The activated partial thromboplastin time is equivalent to the Kaolin cephalin clotting time, and is a measure of the activity of the intrinsic pathway of coagulation (VIII, IX, XI, XII). The normal range is 30-45 seconds.
intrinsic pathway of blood coagulation
interpretation of the results of screening tests used in the diagnosis of coagulation disorders