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HelpTest Code GBM Glomerular Basement Membrane Ab
Additional Codes
Meditech Order: GBM
Panel Order:VASCPANEL
Intended Use
GBM is intended for the in vitro semi-quantitative measurement of IgG antibodies to α3 chain of collagen IV in human serum and plasma (Li-heparin, EDTA) as an aid in
the clinical diagnosis of Goodpasture syndrome in conjunction with other laboratory and clinical findings. EliA GBM uses the EliA IgG method on the instrument Phadia 250.
Performing Lab
Boone Health Laboratory
Collection Method
Venous Collection
Container
Gold Serum Tube
Instructions/Special Handling
None
Preferred Specimen
Gold SST Serum Tube
Red Serum
Acceptable Specimes
- Plasma
- Lithium Heparin
- EDTA
Units
| EliA U/mL |
Reference Ranges
| <7 | Negative |
| >10 | Positive |
| 7-10 | Equivoval (recommend retesting after 8-12 weeks) |
| >680 | >680 EliA U/mL |
Critical Values
N/A
Reasons for Rejection
| Hemolysis | >519 mg/dL |
| Icterus | >19.1mg/dL |
| Lipemia | >1000mg/dL |
| Other | QNS, Improperly labeled, Improper specimen type, Rheumatoid Factor IgM >550IU/mL and contaminated specimens. |
Specimen Stability
| Ambient (15-25°C) | 8 hours |
| Refrigerated (2-8°C) | 14 days |
| Frozen (-20°C) | 12months (only one freeze thaw cycle) |
Performance Information
| Days/Times Performed | Monday, Wednesday and Friday |
| Expected Turn around Time | 1-3 days |
| Methodology/Method Description | EliA IgG |
CPT Code(s)
86036