Test Directory
| Test Code | |||||||||||||
| GBMAB | |||||||||||||
| Test Name | |||||||||||||
| GBM Autoantibody | |||||||||||||
| CPT Codes | |||||||||||||
| 83516 | |||||||||||||
| Clinical Utility | |||||||||||||
|
Anti-GBM antibodies (glomerular basal membrane; Goodpasture Antigen) are important for the diagnosis of glomerulonephritis, which may be accompanied by pulmonary hemorrhage (Goodpasture pulmo-renal Syndrome). Due to clinical symptoms similar with systemic vasculitis, it is appropriate to concurrently carry out tests for anti-GBM and antineutrophil cytoplasmic antibodies (ANCA). |
|||||||||||||
| Specimen and Container Info | |||||||||||||
|
Specimen Type: Serum Desired Specimen Volume: 2 mL Collection Container: Gold Top, Serum Separator |
|||||||||||||
| Processing and Submission Instructions | |||||||||||||
|
Separator tubes: Contains clot activator and gel for separating serum from cells, but not anticoagulant. Separate serum from cells as soon as the clot has formed (30 minutes). If specimen is centrifuged before clotting is complete, a fibrin clot will form on top of the cell. This may cause the gel barrier to not be intact and could cause improper separation of serum and cells, possibly affecting test results. |
|||||||||||||
| Transport Instructions | |||||||||||||
|
Transport refrigerated |
|||||||||||||
| Stability Requirements | |||||||||||||
|
|||||||||||||
| Methodology | |||||||||||||
| Semi-Quantitative Multiplex Bead Assay | |||||||||||||
| Reference Intervals | |||||||||||||
|
|||||||||||||
| Performing Location | |||||||||||||
| Roble Road Core Laboratory | |||||||||||||
| Testing Schedule | |||||||||||||
| Routine, Monday - Friday no holidays | |||||||||||||
The American Medical Association (AMA) Current Procedural Terminology (CPT) codes published by HNL Lab Medicine are guidelines and are intended for informational purposes only. CPT coding is the exclusive responsibility of the billing entity. View the Terms.
© 2026 HNL Lab Medicine. All rights reserved.