Partial Thromboplastin Time
Synonyms
Activated Partial Thromboplastin Time
Cephalin Kaolin Coagulation Time
Cephalin-Kaolin Coagulation Time
Coagulation Time, Cephalin Kaolin
Coagulation Time, Cephalin-Kaolin
Coagulation Time, Kaolin-Cephalin
Kaolin Cephalin Coagulation Time
Kaolin-Cephalin Coagulation Time
Thromboplastin Time, Partial
The time required for the appearance of FIBRIN strands following the mixing of PLASMA with phospholipid platelet substitute (e.g., crude cephalins, soybean phosphatides). It is a test of the intrinsic pathway (factors VIII, IX, XI, and XII) and the common pathway (fibrinogen, prothrombin, factors V and X) of BLOOD COAGULATION. It is used as a screening test and to monitor HEPARIN therapy.
See Also