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MeSH. D010314. [ edit on Wikidata] The partial thromboplastin time ( PTT ), also known as the activated partial thromboplastin time ( aPTT or APTT ), is a blood test that characterizes coagulation of the blood. A historical name for this measure is the kaolin-cephalin clotting time ( KCCT ), [1] reflecting kaolin and cephalin as materials ...
Clotting time is a general term for the time required for a sample of blood to form a clot, or, in medical terms, coagulate. The term "clotting time" is often used when referring to tests such as the prothrombin time (PT), activated partial thromboplastin time (aPTT or PTT), activated clotting time (ACT), thrombin time (TT), or Reptilase time.
Thromboplastin. Thromboplastin ( TPL) is derived from cell membranes and is a mixture of both phospholipids and tissue factor, neither of which are enzymes. Thromboplastin acts on and accelerates the activity of Factor Xa, also known as thrombokinase, [1] aiding blood coagulation through catalyzing the conversion of prothrombin to thrombin.
Alkali denaturation test. Purpose. differentiate neonatal from maternal blood. The alkali denaturation test, also known as A or Apt test, is a medical test used to differentiate fetal or neonatal blood from maternal blood found in a newborn's stool or vomit, or from maternal vaginal blood. [1] [2]
Lupus anticoagulant is an immunoglobulin [1] that binds to phospholipids and proteins associated with the cell membrane. Its name is a partial misnomer, as it is actually a prothrombotic antibody in vivo. The name derives from their properties in vitro, as these antibodies increase coagulation times in laboratory tests such as the activated ...
D013918. [ edit on Wikidata] The thrombin time ( TT ), also known as the thrombin clotting time ( TCT ), is a blood test that measures the time it takes for a clot to form in the plasma of a blood sample containing anticoagulant, after an excess of thrombin has been added. [1] It is used to diagnose blood coagulation disorders and to assess the ...
Activated clotting time ( ACT ), also known as activated coagulation time, is a test of coagulation. [1] [2] The ACT test can be used to monitor anticoagulation effects, such as from high-dose heparin before, during, and shortly after procedures that require intense anticoagulant administration, such as cardiac bypass, interventional cardiology ...
Mixing studies are tests performed on blood plasma of patients or test subjects to distinguish factor deficiencies from factor inhibitors, such as lupus anticoagulant, or specific factor inhibitors, such as antibodies directed against factor VIII. [1] Mixing studies are screening tests widely performed in coagulation laboratories.