Cystatin C is believed to be a more accurate gauge because, unlike creatinine, which can fluctuate depending on muscle mass and other factors, its levels are more stable.

• ，一般认为，测量半胱氨酸蛋白酶抑制物C是比肌酐指标更为精确的诊断方法，它不像肌酐因肌肉质量和其他因素产生波动，水平一直比较稳定。