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This is a reason why so few reference ranges are provided on this site.

It is important to know that you must use the range supplied by the laboratory that performed your test to evaluate whether your results are "within normal limits." For more information, please read the article Reference Ranges and What They Mean.

RBCs have structures on their surfaces called antigens.

Each person has their own individual set of RBC antigens, determined by inheritance from their parents. Mosby's Diagnostic and Laboratory Test Reference 5th Edition: Mosby, Inc., Saint Louis, MO.

When your healthcare provider wants to find out the cause of your hemolytic anemia; when you have had a blood transfusion recently and are experiencing symptoms of a transfusion reaction; or when a newborn shows signs of hemolytic disease of the newborn You may be able to find your test results on your laboratory's website or patient portal. You may have been directed here by your lab's website in order to provide you with background information about the test(s) you had performed.

You will need to return to your lab's website or portal, or contact your healthcare practitioner in order to obtain your test results.

The test may help to detect or identify conditions in which antibodies become attached to RBCs, causing them to break apart (hemolyze). If it is present on someone's red blood cells, that person's blood type is Rh (positive); if it is absent, the blood is type Rh- (negative). (For more on these antigens, see the article on Blood Typing.) In addition, there are many other types of RBC antigens that make up lesser known but still clinically significant blood groups, such as Kell, Duffy, and Kidd. There are a few reasons why antibodies may become attached to antigens on RBCs: A DAT may also be used to help diagnose hemolytic disease of the newborn (HDN) due to an incompatibility between the blood types of a mother and baby. When a baby is born, the mother may be exposed to the foreign antigens on the baby's RBCs and may produce antibodies directed against the baby's RBC antigens. Sources Used in Previous Reviews Thomas, Clayton L., Editor (1997).

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