Clin Chem Lab Med
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Early detection of patients with chronic kidney disease is of great importance. This study developed reference limits for serum creatinine and serum cystatin C concentrations and for the estimated glomerular filtration rate (eGFR) in healthy subjects from the general population aged 25-65 years. ⋯ This study presents age- and sex-specific reference limits for five measures of renal function based on quantile regression models.