MGAM and diabetic kidney disease: ROC curve analysis showed a low area under curve of 0.574 (95%CI: 0.446–0.703), 0.558 (95%CI: 0.418–0.698), and 0.611 (95%CI: 0.488–0.734) for FIB, α1-MG/CR, and the combined PRE, respectively, in discriminating between non-advanced and advanced DKD.