A WHOLE BLOOD ACTIVATED PARTIAL THROMBOPLASTIN TIME TEST AND ASSOCIATED APPARATUS

摘要

An activated partial thromboplastin time (APTT) test is described which does not require blood which has been anticoagulated with citrate. The test enables the citrate anticoagulant step to be combined with the contact activation step and hence enables one to employ fresh non-anticoagulated blood specimens to directly perform the APTT test.