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Coombs, Direct, Polyspecific

Item Value
Clinical Questions Is my patient actively hemolyzing his/her own or transfused RBCs?
Approval req'd? No
Available Stat? No
Test code DCT
Test group Coombs
Performed by Parnassus & Mission Bay Blood Banks
In House Availability Test available 24 hours per day 7 days per week
Container type Lavender top (6 mL size preferred)
Amount to Collect 6 mL blood
Sample type EDTA whole blood
Preferred volume 6 mL blood
Min. Volume 3 mL blood
UCSF Rejection Criteria Unsigned, mislabeled, unlabeled or hemolyzed sample.
Normal range Negative
Synonyms DAT; Direct antiglobulin test; direct coombs; cord blood tests
Turn around times 4 hours
Reflex? If positive specific testing to determine if the reactivity is due to Complement or IgG is automatically performed.
Additional information If the polyspecific test is positive, a monospecific assay will automatically be initiated at an additional charge to further evaluate the problem, except in neonates, in whom it may be assumed a positive test represents IgG coating of RBCs.
CPT coding 86880
LOINC code 51871-2
Last Updated 5/30/2016 12:01:34 AM
Entry Number 251
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