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What is Raised aPTT is seen in all of the following bleeding disorder except: March 2009 and explain in detail?
Ans. D: Henoch - Schonlein purpuraThe paial thromboplastin time (PTT) or activated paial thromboplastin time (aPTT/ APTT) is a performance indicator measuring the efficacy of both the "intrinsic" (contact activation pathway) and the common coagulation pathways. Apa from detecting abnormalities in blood clotting, it is also used to monitor the treatment effects with heparin, a major anticoagulant.