Normal Kidney Function

A person normally has two kidneys located at either side of the spine behind the abdominal organs and below the rib cage. They are bean shaped and weigh about one-third of a pound. When working properly, your kidneys perform five main functions:

  1. Clean waste material from the blood
  2. Retain or excrete salt and water
  3. Regulate blood pressure
  4. Stimulate bone marrow to make red blood cells
  5. Control the amount of calcium and phosphorous absorbed and excreted

How Your Kidneys Work