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HelpDirect Antiglobulin Test
Additional Codes
LAB274
Performing Laboratory
MBMC Blood Bank
Methodology
MTS Gel/Manual Test Tube
Testing Algorithm
This test screens for polyspecific anti-IgG,-C3. If positive, the individual anti-IgG and anti-C3 testing to determine the source of reactivity will be performed at an additional charge.
If DAT is positive, and patient has been transfused at MBMC in the past 21 days or if the physician requests, then an elution and antibody identification will be performed at an additional charge.
Specimen Requirements
Specimen Type: Whole blood
Container/Tube: Lavender top (EDTA)
Specimen Volume: 10 mL
Collection Instructions: Label tube per Patient Identification and Specimen Labeling Policy and Procedure in Special Instructions.
Specimen Transport Temperature
Ambient
Day(s) Test Set Up
Monday through Sunday
Turnaround Time:
Within 4 hours
Reference Values
DAT IgG: Negative
DAT C3: Negative
Test Classification and CPT Coding
86880-Direct coombs
86880-DAT IgG (if appropriate)
86880-Anti C3 (if appropriate)
86860-Antibody elution (if appropriate)
86870-Antibody identification (if appropriate)