Test Code LAB0203505 Glomerular Basement Membrane Antibodies, IgG, Serum
Additional Codes
Mayo Test ID |
---|
GBM |
Performing Laboratory
Mayo Clinic Laboratories in RochesterUseful For
Evaluating patients with clinical features of anti-glomerular basement disease, including rapidly progressive glomerulonephritis or pulmonary hemorrhage
Method Name
Multiplex Flow Immunoassay
Reporting Name
Glomerular Basement Membrane IgG AbSpecimen Type
SerumOrdering Guidance
If patient is being evaluated for autoimmune skin disease, order CIFS / Cutaneous Immunofluorescence Antibodies (IgG), Serum for evaluation of anti-intercellular substance (ICS) and antibasement membrane zone (BMZ) antibodies.
Specimen Required
Supplies: Sarstedt Aliquot Tube 5 mL (T914)
Collection Container/Tube:
Preferred: Serum gel
Acceptable: Red top
Submission Container/Tube: Plastic vial
Specimen Volume: 0.5 mL
Collection Instructions: Centrifuge and aliquot serum into a plastic vial.
Specimen Minimum Volume
0.35 mL
Specimen Stability Information
Specimen Type | Temperature | Time | Special Container |
---|---|---|---|
Serum | Refrigerated (preferred) | 21 days | |
Frozen | 21 days |
Reject Due To
Gross hemolysis | Reject |
Gross lipemia | Reject |
Gross icterus | OK |
Reference Values
<1.0 U (negative)
≥1.0 U (positive)
Reference values apply to all ages.
Interpretation
A positive result for anti-glomerular basement (GBM) antibody is consistent with the diagnosis of anti-GBM disease, in patients with the appropriate clinical presentation.
Day(s) Performed
Monday through Friday
Report Available
2 to 3 daysSpecimen Retention Time
14 daysTest Classification
This test has been cleared, approved, or is exempt by the US Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.CPT Code Information
83516
LOINC Code Information
Test ID | Test Order Name | Order LOINC Value |
---|---|---|
GBM | Glomerular Basement Membrane IgG Ab | 31254-6 |
Result ID | Test Result Name | Result LOINC Value |
---|---|---|
GBM | Glomerular Basement Membrane IgG Ab | 31254-6 |
Forms
If not ordering electronically, complete, print, and send a Renal Diagnostics Test Request (T830) with the specimen.