Partial Thromboplastin Time

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.

Year introduced: 1991(1980)

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Tree Number(s): E01.370.225.625.115.600, E05.200.625.115.600, G09.188.660

MeSH Unique ID: D010314

Entry Terms:

• Activated Partial Thromboplastin Time
• Thromboplastin Time, Partial
• Kaolin-Cephalin Coagulation Time
• Coagulation Time, Kaolin-Cephalin
• Kaolin Cephalin Coagulation Time
• Coagulation Time, Cephalin-Kaolin
• Coagulation Time, Cephalin Kaolin
• Cephalin-Kaolin Coagulation Time
• Cephalin Kaolin Coagulation Time

Previous Indexing:

• Blood Coagulation Tests (1966-1979)
• Thromboplastin (1966-1979)

See Also:

• Blood Coagulation

All MeSH Categories
Analytical, Diagnostic and Therapeutic Techniques and Equipment Category
Diagnosis
Diagnostic Techniques and Procedures
Clinical Laboratory Techniques
Hematologic Tests
Blood Coagulation Tests
Partial Thromboplastin Time

All MeSH Categories
Analytical, Diagnostic and Therapeutic Techniques and Equipment Category
Investigative Techniques
Clinical Laboratory Techniques
Hematologic Tests
Blood Coagulation Tests
Partial Thromboplastin Time

All MeSH Categories
Phenomena and Processes Category
Circulatory and Respiratory Physiological Phenomena
Blood Physiological Phenomena
Partial Thromboplastin Time