Bleeding time

Injury	Disease	Nutrition	Poison

Symptoms	Surgery	Test	Special Topic

Blood clot test

Overview

Risks

Results

Bleeding time

Definition:

This is a test that measures the speed at which small blood vessels close off to stop bleeding (the condition of the blood vessels) and platelet function.

How the test is performed:

A blood pressure cuff is placed on the upper arm and inflated. Two incisions are made on the lower arm. These are about 10 mm (less than 1/2 inch) long and 1 mm deep (just deep enough to cause minimal bleeding).

The blood pressure cuff is immediately deflated. Blotting paper is touched to the cuts every 30 seconds until the bleeding stops. The length of time it takes for the cuts to stop bleeding is recorded.

How to prepare for the test:

Certain medications can interfere with platelet function and therefore may alter test results. Always make sure to tell your doctor what medications you are taking, even over-the-counter preparations.

Your health care provider may ask you to discontinue these medications several days prior to the test. Never discontinue medication without consulting your health care provider.

How the test will feel:

The incisions are very shallow and should feel like scratches.

Why the test is performed:

This test is useful for detecting bleeding problems.

Review Date: 2/3/2005
Reviewed By: Rita Nanda, M.D., Department of Hematology/Oncology, University of Chicago Medical Center, Chicago, IL. Review provided by VeriMed Healthcare Network.

The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed physician should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. Copyright 2004 A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.