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 7/7/2019
Updated by: David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine, Seattle, WA. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.