Table 1 Nephrotoxicity scoring system in histopathology
Grade | Glomerular Damage | Tubular damage | Tubulointerstitial inflammatory infiltrates |
|---|---|---|---|
0 | None (Normal) | None (Normal) | None (Normal) |
1 | <  25% of Glomeruli | < 25% of parenchymal tubules | Leucocytes only in interstitium |
2 | 25–50% of Glomeruli | 25–50% of parenchymal tubules | Leucocytes in both interstitium and tubular epithelial cells |
3 | 50–75% of Glomeruli | 50–75% of parenchymal tubules | _ |
4 | >  75% of Glomeruli | > 75% of parenchymal tubules | _ |