Bleeding Time is one of the oldest tests used to assess primary hemostasis (the initial process of blood clotting).

It evaluates how well platelets and small blood vessels work together to stop bleeding.

The test is performed by making a small cut on the skin and measuring the time until bleeding stops.

Clinical uses include:

Detecting platelet function disorders.

Investigating unexplained bleeding or bruising.

Supporting diagnosis of conditions like thrombocytopenia or von Willebrand disease.

Although less commonly used today (replaced by more advanced platelet function tests), BT can still provide useful preliminary information.

Analyte/Focus: Platelet function and blood vessel response.

Normal Range: Typically 2–9 minutes (varies by method and lab).

Prolonged Bleeding Time: May indicate platelet disorders, low platelet count, von Willebrand disease, or effects of certain medications (like aspirin).

Clinical Use:

Assesses platelet activity in clot formation.

Helps diagnose bleeding disorders.

Provides supportive information alongside other coagulation tests (like PT, APTT, Platelet Count).