Spontaneous bleeding occurs when platelet count falls below:: (A) 50,000/mL, (B) 40,000/mL, (C) 30,000/mL, (D) 20,000/mL
Answer is D. d. 20,000/mL(Ref: Wintrobes 13/689)In general, the risk of significant spontaneous hemorrhage increases gradually as the platelet count drops to <50 109/L and is high at counts <5 109/L. So among the options the best answer is 20,000/mL.