Goodpasture syndrome is a rare but potentially life-threatening autoimmune disease that occurs when the body’s immune system mistakenly attacks the lining of the lungs, along with the kidney’s filtering units. If left undiagnosed and untreated, the disease can lead to bleeding in the lungs, kidney failure, and death.

The GBM IFT test is a quantitative test for anti-GBM antibodies (GBM AB), which is important in the diagnosis of Goodpasture syndrome. So how is the GBM IFT test performed?