Glomerular Basement Membrane Antibody (IgG)

Test Code

ANTIGBM

Quest Code

257

Alias/See Also

Anti-glomerular Basement Membrane
Anti-GM1
GM-1

CPT Codes
83520

Preferred Specimen

1 mL serum

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

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 20, 2020

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.