BLEEDING TIME Bleeding time is a blood test that looks at how fast small blood vessels close to stop from bleeding. This test helps diagnose bleeding problems. Normal Results Bleeding normally stops within 1 to 9 minutes. However, values may vary from lab to lab. What Abnormal Results Mean Longer-than-normal bleeding time may be due to: Blood vessel defect Platelet aggregation defect Thrombocytopenia (low platelet count) Additional conditions under which the test may be performed: Acquired platelet function defect Congenital platelet function defects Primary thrombocythemia Von Willebrand's disease Shri Shivay Health Research Institute