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Test Code NTC NEWBORN TYPE & DIRECT COOMBS

Methodology

Tube Testing

This test is performed to determine blood type (ABO) and Rh on newborn infants. The DAT is used to detect antibodies adsorbed to the surfaces of the infant’s RBCs which may cause hemolytic disease of the newborn (HDN).

Specimen Requirements

Container/Tube: Lavender-top (EDTA) MICROTAINER®

Specimen Volume: 0.5 mL of whole blood

Collection Instructions:

Note: 

  • If specimen is cord blood, send a minimum of 1 mL of EDTA cord blood.
  • DAT must be performed within 24 hours of collection

Day(s) Test Set Up

Monday through Sunday

Reference Values

ABO: A, B, AB, or O

Rh TYPE: Positive or negative

DAT: Negative

Performing Laboratory

Logan Health Medical Center Laboratory

Test Classification and CPT Coding

86900-ABO
86901-Rh

86880-DAT

Specimen Transport Temperature

Refrigerate;

2 to 8o  C