Table 3: Follow-up of Immunofluorescent (IF) Stains in Renal Biopsies with Anti-Glomerular Basement Membranes (GBM) Crescentic Glomerulonephritis (GN)

Diagnosis	Original Stains for IgG/κ/λ	F-U (months)	F-U stains for for IgG/κ/λ
anti-GBM GN	3+/3+/2+	53	1+/0 /0
anti-GBM GN	3+/2+/2+	37	2+/1+/1+
anti-GBM GN	3+/3+/3+	37	2+/1+/0
anti-GBM GN	3+/2+/3+	37	2+/1+/1+
anti-GBM GN	3+/3+/3+	35	2+/1+/2+
anti-GBM GN	3+/2+/2+	23	2+/ 0 /0
anti-GBM GN	3+/2+/2+	20	3+/1+/1+
anti-GBM GN	2+/2+/1+	18	0 / 0 / 0 *
anti-GBM GN	3+/2+/1+	7	1+/ 0 / 0 #
anti-GBM GN	3+/2+/2+	4.5	3+/2+/2+

* This biopsy showed initial weak stains for IgG, kappa and lambda.
# This patient had serology test positive for ANCA and negative for anti-GBM, but his duplicate stains for IgG were linearly positive. The reduced staining in the follow-up may be related to repeat examinations of stains due to the unusual mismatch between the serology tests and IF stains.