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HelpTest Code LAGGT Granulocyte Antibodies, Serum
Reporting Name
Granulocyte Ab, SPerforming Laboratory
Mayo Clinic Laboratories in Rochester
Useful For
Work-up of individuals having febrile, nonhemolytic transfusion reactions
Detection of individuals with autoimmune neutropenia
This test is not useful for the diagnosis of neutropenia caused by marrow suppression by drugs or tumors.
Method Name
Indirect Immunofluorescence
Specimen Required
Collection Container/Tube: Red top
Submission Container/Tube: Plastic vial
Specimen Volume: 1.5 mL
Collection Instructions: Centrifuge and aliquot serum into a plastic vial.
Additional Information: Only pretransfusion reaction specimen is acceptable.
Specimen Type
Serum RedSpecimen Minimum Volume
0.3 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Serum Red | Refrigerated (preferred) | 30 days | |
| Frozen | 365 days | ||
| Ambient | 7 days |
Reject Due To
| Gross hemolysis | OK |
| Gross lipemia | OK |
| Gross icterus | OK |
Reference Values
Not applicable
Interpretation
A positive result in an individual being worked up for a febrile transfusion reaction indicates the need for leukocyte-poor (filtered) red blood cells.
This test cannot distinguish between allo- and autoantibodies
Day(s) Performed
Tuesday, Wednesday, Friday
Report Available
7 to 15 daysTest Classification
This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. It has not been cleared or approved by the US Food and Drug Administration.CPT Code Information
86021
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| LAGGT | Granulocyte Ab, S | 35279-9 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| LAGG | Granulocyte Ab, S | 35279-9 |