Laboratory Services

Type and Screen

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Updated Test Information:

Test Description
Type and Screen

Blood Group, Blood Type, Antibody Screen

Test ID
General Information

ABO/Rh determines the blood group (ABO) and Rh type (pos or neg). ABS detects antibodies directed against red blood cell antigens. The Blood group, Rh type, and Antibody Screen of expectant mothers may indicate potential for hemolytic disease of the fetus/newborn. Rh typing is used to determine Rh immune globulin candidacy for prenatal and postpartum patients.

Specimen Type

Whole Blood

Alternate Specimen Type


Specimen Requirements

2 Lavender or 1 Pink (EDTA)

Specimen Collection / Processing Instructions

Lavender - The specimen should be tested as soon as possible after collection. If testing is delayed, EDTA specimens should be stored at 2 to 8°C. Draw an extra lavender tube in case of Antibody ID reflex


Refrigerated 10 days

Unacceptable Specimen Conditions

Grossly hemolyzed, icteric, or lipemic samples. Frozen samples. Bacterial contamination.


Individuals younger than four months may not have developed sufficient antibody to allow for detection in reverse typing test.
Variable testing results may be observed with partial antigens, which are rare variants of the D antigen.
Abnormal plasma proteins, cold autoagglutinins, positive direct antiglobulin test, and, in some cases, bacteremia may interfere with test interpretation.


Hemagglutination/gel filtration

Estimated TAT

1-3 days

Testing Schedule

Monday - Saturday

Test Includes


CPT Code(s)


Minimum Sample Volume

6 ml

Pediatric Min. Volume (if applicable)

6 ml

Reflex Conditions

If antibody screen is positive, antibody identification and titer will be performed. Please allow additional time for testing to be completed.

Performing Lab

Incyte Diagnostics

LOINC Code(s)