Understand Your Test

Blood Group; Rh Factor

Formal name: ABO Group and Rh Type

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