Urine test:

Urine is the liquid waste product excreted by the kidneys. It is stored in the bladder until it is emptied out through the urethra.
- Reviewed last on: 8/14/2007
- Charles Silberberg, DO, Private Practice specializing in Nephrology, Affiliated with NY Medical College, Division of Nephrology, Valhalla, NY. Review provided by VeriMed Healthcare Network.