Sample results
Goodpasture syndrome is a rare autoimmune disorder that simultaneously attacks the lungs and kidneys. It is caused by the immune system producing IgG antibodies against type IV collagen in the glomerular basement membrane of kidneys and alveolar basement membrane of lungs. The IgG, IgA, Indirect Immunofluorescence test is the most important test for diagnosing Goodpasture syndrome because it detects these disease-specific antibodies.
Goodpasture syndrome is caused by the immune system producing antibodies against type IV collagen, a protein found in the basement membranes of kidney glomeruli and lung alveoli. These anti-glomerular basement membrane (anti-GBM) antibodies attack these tissues, causing inflammation and bleeding in both organs. While the exact trigger is unknown, some cases develop after respiratory infections, exposure to hydrocarbon solvents, or smoking, which may activate the autoimmune response in genetically susceptible individuals.
The IgG, IgA, Indirect Immunofluorescence test is the most important test for Goodpasture syndrome because it detects circulating anti-glomerular basement membrane (anti-GBM) IgG antibodies, which are the hallmark of this disease. This specialized test uses immunofluorescence technique to identify the disease-specific antibodies responsible for attacking kidney and lung tissues, providing high accuracy for diagnosis. Early detection of these antibodies is critical because Goodpasture syndrome can rapidly progress to kidney failure and life-threatening lung bleeding without prompt treatment.
You should get tested if you experience coughing up blood, unexpectedly shortness of breath, swelling in your legs or face, blood in your urine, or fatigue combined with pale skin. Testing is especially urgent if you have both respiratory symptoms like difficulty breathing and signs of kidney problems like decreased urination or foamy urine. Because Goodpasture syndrome progresses rapidly and can cause permanent organ damage within days to weeks, immediate testing is essential if you have these warning signs, particularly after a recent respiratory infection.
What this means
Your test came back negative, meaning no anti-epithelial cell surface antibodies were detected in your blood. This is the expected and healthy result, suggesting no active autoimmune blistering disease affecting the connections between skin cells.
Recommended actions
Continue monitoring any skin symptoms and report new blistering to your doctor
Maintain good skin care practices and protect skin from excessive friction
If you develop unexplained blisters or sores, consider retesting
Follow up with your dermatologist if symptoms persist despite negative results
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Sample results
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