P-values corresponding to Mann-Whitney U-tests between diagnostic groups are provided in the table. The ROC curve-derived diagnostic threshold for AMR (−0.092) is indicated by the dashed line. Abbreviations: AMR, antibody-mediated rejection; Mixed, mixed AMR and TCMR; Native, normal native nephrectomy; Suspicious, suspicious for AMR; TCMR, T-cell mediated rejection.