Medical Encyclopedia
Urine sample
Urine is the liquid waste product excreted by the kidneys. It is stored in the bladder until it is emptied out through the urethra.
Update Date: 9/7/2008
Updated by: David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine; and Louis S. Liou, MD, PhD, Assistant Professor of Urology, Department of Surgery, Boston University School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.
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