Research Article
Diagnostic Accuracy of Direct Immunofluorescence Test on Paraffin-Embedded Blocks in Comparison with Frozen Section Blocks in Renal Biopsies
Table 7
Comparison of immunofluorescence intensity on fresh frozen and paraffin-embedded renal biopsies.
| Disease | Number of cases with no difference in intensity of diagnostic immunoglobulin/complement (%) IF-F = IF-P | Number of cases with the difference in intensity of diagnostic immunoglobulin/complement (%) IF-F > IF-P | Total number of cases | Difference of 1+ | Difference of 2+ |
| Membranous nephropathy | 22 (84.6%) | 4 (15.3%) | — | 26 | Lupus nephritis | 11 (61%) | 7 (38%) | — | 18 | IgA nephropathy | 4 (57.1%) | 2 (28.5%) | 1 (14.2%) | 7 |
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IF-F: Immunofluorescence on fresh frozen tissue: IF-P: Immunofluorescence on paraffin-embedded tissue.
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