Updated reference intervals for serum cystatin C and creatinine based on age and sex variations.

Unlabelled: We investigated inconsistencies between results for cystatin C (Cys C) and creatinine (Crea) in patients undergoing health check-ups. Data from 36,836 individuals who underwent health checkups at Huashan Hospital over the previous 3 years were analyzed. We extracted laboratory results of 10 biomarkers and information on sex and age.