Anti-GBM antibody test
Quick answer: This blood test looks for antibodies against the glomerular basement membrane, a filter layer in the kidneys. Doctors usually order it urgently when they suspect anti-GBM (Goodpasture) disease, which can affect the kidneys and lungs.
- SampleBlood
- TakesAbout 5 minutes
- Before the testNo special preparation is usually needed.
How the test is done
- 1Blood is usually taken promptly when this test is requested
- 2A nurse cleans a vein in your arm
- 3A needle collects a tube of blood
- 4The lab measures antibodies to the glomerular basement membrane
What your results can mean
Reading your report
A positive result does not by itself confirm a disease, because some healthy people test positive; your doctor reads it with your symptoms and other tests.
If the result is outside the usual range
A positive result can point to anti-GBM (Goodpasture) disease, which can cause fast kidney damage and bleeding in the lungs. Some people also have a positive ANCA at the same time.
Who usually has this test
People with rapidly worsening kidney function, blood in the urine or coughing up blood.
Risks and aftercare
Nothing special for the blood test itself, though the underlying illness may need urgent care.
Names and options
Also called: anti-GBM, glomerular basement membrane antibody, Goodpasture antibody
Listed by the hospital as
- ANTI GBM ANTIBODY IF METHOD
Questions about this test
Why is anti-GBM disease treated as an emergency?
It can damage the kidneys within days or weeks and cause bleeding in the lungs. Early treatment improves the chance of keeping kidney function.
Why are ANCA tests done with anti-GBM?
Some people have both antibodies, and their illness can behave a little differently. Testing both at once helps doctors plan treatment.
Can anti-GBM be positive without lung bleeding?
Yes. Some people have kidney involvement only. The name Goodpasture syndrome is often used when both kidneys and lungs are affected.
Related tests
Tamara Hospital & IVF Centre, Rajajinagar
34/3, 10th Cross Road, opp. Vardhaka Sardar Patel School, 1st N Block, 2nd Stage, Rajajinagar, Bengaluru 560010
The hospital is open 24 hours. Call before you come to check the timing for your scan or sample collection.
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This page explains each test in general terms so you know what to expect. It is not medical advice: your doctor decides which tests you need and what your results mean. Reference ranges differ between laboratories. Updated 4 November 2026.