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Test Code NBDATG Direct coombs (DAT) Baby, LAB2045


IgG Gel Method

Performing Laboratory

St. Luke's Hospital Cedar Rapids

Specimen Requirements


Preferred: Pink-top (EDTA) tube

Acceptable:  Lavender-top (EDTA) tube
Specimen Volume: 0.5 mL of EDTA whole blood

Stability: The sample should be tested as soon as possible following collection.  If a delay

               in testing occurs, the sample should be stored 2-6 C.  

Collection Instructions: If the specimen is also to be used for transfusion purposes is must be

                correctly hand labeled from the armband with patient's full name, inpatient hospital

                medical record number or B-Band number, time/date collected and tech code/initials.

Reference Values

Not applicable

Day(s) Test Set Up

Monday through Sunday

Test Classification and CPT Coding


Useful For

The direct antiglobulin testing of newborn cells is performed to detect maternal IgG antibody that is coating the newborn’s red cells.  This test along with an ABORH should be ordered on the baby if a cord blood was not obtained and the testing is indicated.