What is the role of urinary calcium/osmolality ratio in the workup of hypercalciuria?

Updated: Jun 02, 2021
  • Author: Stephen W Leslie, MD, FACS; Chief Editor: Vecihi Batuman, MD, FASN  more...
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In children with decreased muscle mass, urinary calcium/osmolality ratio has been suggested as a more specific and sensitive screening test than calcium/creatinine ratio because of decreased urinary creatinine excretion in those patients. A urinary calcium/osmolality ratio (X 10) of less than 0.25 is considered to be suggestive of hypercalciuria.

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