Urinary proteins and NAG after DN: multiples of the initial value versus measurement time points. IgG, immunoglobulin G/U-Crea; Alb, albumin/U-Crea; Tf, transferrin/U-Crea; α1M, α1-microglobulin/U-Crea; RbP, retinol-binding protein/U-Crea; β2M, β2-micro-globulin/U-Crea; NAG, N-acetyl-β-D-glucosaminidase/U-Crea; U-Crea, urinary creatinine; DN, donor nephrectomy.