Analytical, Diagnostic and Therapeutic Techniques, and Equipment [E] » Diagnosis [E01] » Diagnostic Techniques and Procedures » Clinical Laboratory Techniques » Hematologic Tests » Blood Coagulation Tests » Partial Thromboplastin Time
Analytical, Diagnostic and Therapeutic Techniques, and Equipment [E] » Investigative Techniques [E05] » Clinical Laboratory Techniques » Hematologic Tests » Blood Coagulation Tests » Partial Thromboplastin Time
Phenomena and Processes [G] » Circulatory and Respiratory Physiological Phenomena [G09] » Blood Physiological Phenomena » Partial Thromboplastin Time
Description
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. MeSH
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