What is the role of creatinine measurement in the diagnosis of nephrolithiasis?

Updated: Jun 21, 2018
  • Author: Chirag N Dave, MD; Chief Editor: Bradley Fields Schwartz, DO, FACS  more...
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Answer

Creatinine is the control that allows verification of a true 24-hour sample. Most individuals excrete 1-1.5 g of creatinine daily. Values at either extreme that are not explained by estimates of lean body weight should prompt consideration that the sample is inaccurate.


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