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Blood Typing

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Also known as: Blood Group; Rh Factor
Formal name: ABO Group and Rh Type
Related tests: Direct Antiglobulin Test, RBC Antibody Screen, Compatibility Testing, Crossmatch, RBC Antibody Identification, HLA Testing

At a Glance

Why Get Tested?

To determine your ABO blood group and Rh type

When to Get Tested?

When you need a transfusion of blood or blood components; when you donate blood at a collection facility or donate an organ, tissue, or bone marrow for transplantation; before or during a woman's pregnancy to determine the risk of Rh incompatibility with the fetus

Sample Required?

A blood sample drawn from a vein in your arm or, for infants, from a heelstick

Test Preparation Needed?