ABO Group and Rh Type (Blood Grouping)

Preferred Specimen(s) 3mL whole blood collected in a EDTA (lavender-top) tube or ACD-A or ACD-B (yellow-top) tube. If submitted with a CBC, HbA1c or any other test requiring a EDTA (lavendertop) tube, submit a separate tube for this test.

Transport Container EDTA (lavender-top) tube or ACD-A or ACD-B (yellow-top) tube

Transport Temperature Room temperature, Stable 6 Days

Reject Criteria

Hemolysis
Received frozen
Serum Separator Tube (SST®)

Methodology Immune Agglutination

Clinical Significance ABO type and Rh are needed to identify candidates for Rh immune globulin and to assess the risk of hemolytic disease of the newborn.