AMR features (Banff criteria) | Positive result | |
---|---|---|
1. Histomorphology | Glomerulitis (g) | Banff scorea ≥1 |
Peritubular capillaritis (ptc) | Banff scorea ≥1 | |
Transplant glomerulopathy (cg) | Banff scorea ≥1 | |
2. Immunohistochemistry | Focal/diffuse C4d staining in PTC (C4d) | Banff scorea ≥1 |
3. Electron microscopy | Basement membrane lamellation in PTC | >3 BM layers per PTC |