The kidneys perform the function of filtering waste products and maintaining water and electrolyte balance in the body. Kidney function tests (KFTs) are used to determine how well the kidneys are working. It is advised in case of symptoms of some major kidney problems like frequent urge to urinate, swelling around the eyes, bloody or foamy urine etc. book KFT test appointment online in best test Lab. Book an appointment in RedcliffeLabs for best Kidney function test in Delhi.