Evaluation of serum creatinine- and cystatin C-based equations for the estimation of glomerular filtration rate in a Chinese population.

The results demonstrated that further improvement is needed for the selected 10 equations. Not all the cystatin C equations were superior to SCr equations. They have their own applicability at various GFR levels. At present, the CKD-EPI, MacIsaac and CG equations may be applied to evaluate GFR in normal, mild to moderate and severe kidney function, respectively.