Home
HelpTest Code LAB274 Direct Coombs
Useful For
Diagnosing hemolytic disease of the newborn, hemolytic anemia, autoimmune processes (either acquired or drug-related), and the evaluation of possible transfusion reactions.
Methodology
Capture solid phase automation and manual blood banking methods
Performing Laboratory
Bozeman Health Laboratory Services
Specimen Requirements
Specimen Type: Whole blood
Container/Tube: Pink top (K2 EDTA), Purple top (EDTA), or Cord Blood red top
Specimen Volume: 6 mL
Specimen Pediatric Volume: 1 full, lavender-top (EDTA) Microtainer
Collection Instructions: Do not centrifuge. Forward unprocessed whole blood promptly.
Additional Information: Include report of diagnosis and history of transfusions and drug therapy.
Specimen Rejection: Gel tube
Specimen Transport Temperature
Ambient <24 hours/Refrigerated >24 hours
Specimen Stability
| Specimen Type | Temperature | Time |
|---|---|---|
| Whole Blood EDTA | Ambient | 24 hours |
| Refrigerated | 10 days |
Reference Values
Negative (reported as positive or negative)
Day(s) Test Set Up
Monday through Sunday
Test Classification and CPT Coding
86880-Coombs, direct