Measuring creatinine and cystatin C - two markers for chronic kidney disease (CKD) - more precisely estimates kidney function than either marker alone, according to a study funded by the National Institutes of Health. Results appear in the New England Journal of Medicine. "Glomerular filtration rate, or GFR, estimates based on creatinine in the blood are routinely used to measure kidney function and diagnose chronic kidney disease. However, estimating GFR using creatinine alone is imprecise and may lead to over-diagnosis in some patients," said Dr...

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