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Urine concentration test

Urine concentration test

Overview

The urine concentration test is a test that measures whether the kidneys are conserving or excreting water properly. A sample of urine is retrieved and tested for its specific gravity.

Review Date 7/1/2025

Updated by: Frank D. Brodkey, MD, FCCM, Associate Professor, Section of Pulmonary and Critical Care Medicine, University of Wisconsin School of Medicine and Public Health, Madison, WI. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.