Bleeding Time

Q: In which of the following PT, PTT, and Platelet count remains normal, and only bleeding time is prolonged  - select one

A) Uremia

B) DIC

C) Hemophilia

D) Von Willebrand disease

Answer:  A (Uremia)

Uremia and (in ASA overdose) - only bleeding Time (BT) is prolonged, but PT, PTT, and Platelet count remain normal.

DIC - PT, PTT, and bleeding time all become prolonged, and Platelet counts decrease.

Hemophilia - only the PTT is prolonged, but the PT, BT, and Platelet counts remain normal.

Von Willebrand disease -  PTT and BT are prolonged, but PT and Platelet counts remain normal.

#hematology

References:

1. Rodgers RPC, Levin J. A Critical Reappraisal of the Bleeding Time. Semin Thromb Hemost. 2024 Apr;50(3):499-516. doi: 10.1055/s-0043-1777307. Epub 2023 Dec 12. PMID: 38086409.

2. Burns ER, Lawrence C. Bleeding time. A guide to its diagnostic and clinical utility. Arch Pathol Lab Med. 1989 Nov;113(11):1219-24. PMID: 2535679.

3. Russeau AP, Vall H, Manna B. Bleeding Time. 2023 Aug 8. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2025 Jan–. PMID: 30725918.