Result	Interpretation
Negative (< 20 U/mL or <1:10 titer)	No significant Anti-GBM antibodies detected. Unlikely to have Anti-GBM disease.
Borderline (20–30 U/mL)	Low levels of Anti-GBM antibodies. May indicate early disease or a false-positive; clinical correlation needed.
Positive (> 30 U/mL or >1:10 titer)	Suggestive of Anti-GBM disease. Requires further clinical evaluation and possibly a kidney/lung biopsy.

Strongly Positive (>100 U/mL): High risk of active Goodpasture’s Syndrome. Immediate intervention needed.
Additional Testing:
- ANCA (Anti-Neutrophil Cytoplasmic Antibody) testing: Some patients may have both Anti-GBM and ANCA-associated vasculitis.
- Kidney Biopsy: If renal involvement is suspected.