Kidneys play a very important role in keeping our bodies free from the waste and toxic elements. It is very important to maintain the right levels of Uric Acid, Creatinine – Serum, Bun / Sr.Creatinine Ratio, Blood Urea Nitrogen (Bun) and Calcium as they help in keeping the kidneys in good condition. A simple blood and urine test can identify the above parameters and any abnormal values in these parameters indicate that the kidneys are not functioning properly and there may be a possibility of damage to the kidneys.