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Labcorp Oklahoma, Inc.
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Glomerular Basement Membrane Antibodies, IgG

Order Name GBM
Revision Date 10/17/2019
Test Name Methodology LOINC Code
Glomerular Basement Membrane Antibodies, IgG
 
SPECIMEN REQUIREMENTS
Specimen Specimen Volume (min) Specimen Type Specimen Container Transport Environment
Preferred 0.5 mL (0.35 mL) Serum Serum Gel Tube Refrigerated
Alternate 1 0.5 mL (0.35 mL) Serum Red Top Refrigerated
Instructions Label specimen with Mobilab label or with patient name (first and last), date of birth, date and time of collection, collector initials, and test(s) being ordered.
Reference Range Reference Values 
<1.0  U (negative)                     
> or =1.0  U (positive)
Reference values apply to all ages.

Interpretation 
Positive results are consistent with Goodpasture syndrome. Glomerular basement membrane antibodies detected by immunoassay have been reported to be highly specific for Goodpasture syndrome. The sensitivity of this test approaches 87% in untreated patients with systemic disease.
Methodology Multiplex Flow Immunoassay
GENERAL INFORMATION
Testing Schedule Monday-Friday; 4 p.m. 
Expected TAT 2 Days  
Notes Specimen Stability:
Refrigerated (preferred) - 21 Days
Frozen - 21 Days
CPT Code(s) 83516
Lab Section NRLS-Mayo Medical Laboratories