In PT test, the addition of Ca2+ & tissue thromboplastin activates which pathway?: (A) Extrinsic, (B) Intrinsic, (C) Fibrinolytic, (D) Common
Answer is A. Ans. (a) ExtrinsicTo PT we add of Ca2+ & tissue thromboplastin which activates extrinsic pathway, while to test for aPTT we add kaolin, silica which activates intrinsic pathway.