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Test ID BLOD1000 Baby Type and Direct Coombs (DAT)

Important Note

Cord blood testing is performed routinely on all infants for the following:

  • Rh negative mothers
  • Group O mothers whose baby is less than 38 weeks gestation
  • Babies admitted to ICN/NICU (provider may waive this testing)
  • Whose mother has historical atypical antibody(ies) that may cause HDN
  • Whose mother T&S from delivery admission was found to have atypical antibody(ies) that may cause HDN
  • And as otherwise requested


Cord Blood Workup, ABORH, DAT

Specimen Type/Requirements

Cord blood specimens are obtained at delivery and labeled at the time of specimen collection.

CORD BLOOD tube, red-top tube (plain) or plain urine/sputum container.  (heparinized specimen is acceptable)

When cord blood is not available, EDTA Peripheral specimen is drawn by venipuncture or capillary.

Specimen Volume

Preferred Volume 4.0 mL whole cord blood or 2.0 mL EDTA peripheral whole blood
Minimum Volume 2.0 mL whole cord blood or 0.5 mL EDTA peripheral whole blood



Room Temperature 3 days  
Refrigerated 3 days Preferred for Transport
Frozen N/A  


Performed Test Frequency


Additional Information

Tests included are ABO/RH and Direct Coombs (DAT).


Cord bloods are saved for 10 days after patient discharge in the event further testing is ordered. Cord bloods on babies admitted to NICU are maintained until 10 days after the baby is discharged from the hospital.


Gel, Test Tube

Performing Lab

Sanford Laboratories Fargo-Transfusion Services/Blood Bank


86900 (ABO), 86901 (Rh), and 86880 (DAT)