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Test Code CORDG Cord Blood Evaluation, LAB892

Performing Laboratory

St. Luke's Hospital Cedar Rapids

Specimen Requirements

Container/Tube:

Preferred: Pink-top (EDTA) tube

Acceptable: Lavender-top (EDTA) tube

Specimen Volume: 3 mL of EDTA cord blood

Stability: Perform testing as soon as possible following collection. If a delay in testing

               occurs, the sample should be stored 1-6 C. 

Collection Instructions: Cord blood should be collected by a nurse at the time of delivery.

Note: If a cord blood sample was not obtained please obtain blood via a heel stick sample

          and use order codes ABORH and NBDATG.

Reference Values

Not applicable

Useful For

When a mother is Rh negative, the Rh typing of newborn cells is performed routinely to determine the need for post partum maternal administration of Rh Immune globulin. 

 

Newborns of Group O mothers may also have cord blood testing performed to detect potential ABO incompatibility.

 

The direct antiglobulin testing of newborn cells is performed to detect maternal IgG antibody that is coating the newborn’s red cells.  

Day(s) Test Set Up

Monday through Sunday

Methodology

Test Tube Method/Gel Method/IgG Gel Method

Test Classification and CPT Coding

86900-ABO
86901-Rh (D)

86880-Antiglobulin, direct