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Using Urine Creatinine Excretion to Determine the Adequacy of a 24 Hour Urine Collection

Specialty:

Clinical Laboratory

Objective:

ICD-10:

Description:

Miller and Lifshitz report using the creatinine excretion in a well-collected 24 hour urine as a benchmark for comparing the adequacy of future urine collections. As long as a patient's muscle mass is stable the urine excretion of creatinine should be relatively constant. A sudden drop in urinary creatinine excretion may indicate an incomplete collection.

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