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Coombs test - indirect
|Overview Risks Results|
Indirect antiglobulin test
|How the test is performed:|
Adult or child:
Infant or young child:
|How to prepare for the test:|
Infants and children:
|How the test will feel:|
When the needle is inserted to draw blood, some people feel moderate pain, while others feel only a prick or stinging sensation. Afterward, there may be some throbbing or a bruise may develop at the site where the needle was inserted.
|Why the test is performed:|
The indirect Coombs' test detects circulating antibodies against red blood cells (RBCs). The major use of this test is to determine if the patient has antibodies in the blood capable of attaching to RBCs. (These antibodies are other than the major ABO system or the Rh type).
The test is only rarely used to diagnose a medical condition but is essential for use by laboratories such as blood banks. Blood banks use the indirect Coombs' test is to determine whether there is likely to be an adverse reaction to blood that is going to be used for a blood transfusion.