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HelpTest Code DCTR Direct Antiglobulin Test (Polyspecific), Blood
Shipping Instructions
Specimen must arrive within 48 hours of collection.
Specimen Required
Container/Tube: Pink top (EDTA)
Specimen Volume: 6 mL
Collection Instructions:
1. Invert several times to mix blood.
2. Send whole blood specimen in original tube. Do not aliquot.
Reflex Tests
| Test ID | Reporting Name | Available Separately | Always Performed |
|---|---|---|---|
| DATR | Direct Antiglobulin Tst (Poly) | No | No |
| DC3TR | Direct Antiglobulin Test (C3) | No | No |
| DIGTR | Direct Antiglobulin Test (IgG) | No | No |
Testing Algorithm
When the direct antiglobulin test (DAT) result is positive, the DAT test will be interpreted as “Invalid – See addl testing" and the polyspecific DAT test will be performed.
When polyspecific DAT result is positive, then DAT complement 3 and DAT IgG tests will be performed at an additional charge.
Method Name
Hemagglutination
Specimen Type
Whole Blood EDTASpecimen Minimum Volume
3 mL; Neonates: EDTA Micro tube 0.5 mL
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Whole Blood EDTA | Ambient (preferred) | 48 hours |
| Refrigerated | 48 hours |
Reject Due To
| Gross hemolysis | OK |
Clinical Information
IgG antibody or complement components secondary to the action of IgM antibody may be present on the patient's own red blood cells (RBC) or on transfused RBC.
Reference Values
Negative
Day(s) Performed
Monday through Sunday
Report Available
Same day/1 to 2 daysPerforming Laboratory
Mayo Clinic Laboratories in Rochester
CPT Code Information
86880