Prologed PT and Normal PTT may be seen in ?: (A) Thrombocytopenia, (B) DIC, (C) Vit. K deficiency, (D) None
Answer is D. Ans. is 'None' o Option a and d are defects of platelets --) Bleeding time is prolonged, PT and PTT are normal. o DIC (causes deficiency of all factors) and vitamin k deficiency (causes deficiency of factor II, VII, IX, X) cause prolongation of both PT and PTT.