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Bleeding Time ( BT )
Rate: Rs. 50
Sample
This test is done on the patient while he is in the lab.
Method
Bleeding Time is determined by making small , superficial skin incision and timing the duration of blood flow from the wounded area.
Significance
This test is a sensitive measure of platelets functions and elasticity of blood vessels. . It is crude bio assay but by careful standardization, it has become a reliable and sensitive test of Platelet function.
Bleeding time more than 10 minutes has risk for bleeding and when it is 15 to 20 minutes then bleeding risk may become great.
NORMAL Values
Bleeding time normal: 2 to 7 minutes
borderline : 7 to 11 minutes.
Abnormal value : 10 to 15 seconds.
Bleeding time is usually normal in coagulation disorders.
Longer-than-normal bleeding time may be due to:
1.Blood vessel defect.
2.Platelet aggregation.
3.Thrombocytopenia.
4.Disseminated intravascular coagulation.
5.Acute Leukemia.
6.Coagulation factor deficiencies like— Factor 1, 11, v,
v11, v111, 1x, and x1 may show some increase.
1.Hodgkin’s disease.
2.Severe hapatic disease.
3.Hemolytic disease of newborn.
