kidney function

Definition of kidney function
National Cancer Institute

kidney function

(KID-nee FUNK-shun)
A term used to describe how well the kidneys work. The kidneys remove waste and extra water from the blood (as urine) and help keep chemicals (such as sodium, potassium, and calcium) balanced in the body. They also make hormones that help control blood pressure and stimulate bone marrow to make red blood cells. Also called renal function.

Source: NCI Dictionary of Cancer Terms