Glomerular Basement Membrane Antibody (IgG)

Test Code

GBMAG

Alias/See Also

LAB727

CPT Codes
<p>83520</p>

Preferred Specimen

Specimen Type: Serum

Collection Container/Type

Preferred: Serum gel

Acceptable: Red top

Submission Container/Tube: Plastic vial

Specimen Volume: 1 mL

Minimum Volume

0.3 mL

Transport Temperature

Room temperature

Specimen Stability

Room temperature: 7 days

Refrigerated: 14 days

Frozen: 30 days

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)

Gross hemolysis

Methodology

Immunoassay (IA)

Setup Schedule

Set up: Mon-Sat; Report available: Next day

Report Available

Next day

Limitations

Weakly positive results (5-30 EU/mL) may occur in patients who do not have antiglomerular basement membrane antibody-mediated disease.

Reference Range

<1.0 AI	No antibody detected
≥1.0 AI	Antibody detected

Clinical Significance

Glomerular Basement Membrane Antibody is present in one fourth of patients with Goodpasture's syndrome. This syndrome consists of glomerulonephritis and pulmonary hemorrhage.

Performing Laboratory
Quest Diagnostics Nichols Institute 14225 Newbrook Drive Chantilly, VA 20153

Last Updated: February 17, 2023

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.