Diagnostic Accuracy of Direct Immunofluorescence Test on Paraffin-Embedded Blocks in Comparison with Frozen Section Blocks in Renal Biopsies

Table 9

The results of IgG, IgA, IgM, and C3 immunofluorescence on frozen and paraffin-embedded sections in 18 cases of lupus nephritis.

	Number of cases with the fluorescence of
	IgG	IgA	IgM	C3
IF-F	18	5	9	10
IF-P	15	3	5	2
Positivity agreement (%)	83.3%	60%	55.5%	20%