A Kidney Function Test (KFT) is a group of blood and urine tests used to assess how well the kidneys are functioning. These tests help measure the kidneys’ ability to filter waste products and maintain the body’s fluid and electrolyte balance. Common components of a KFT include blood urea, serum creatinine, uric acid, electrolytes such as sodium and potassium, and estimated glomerular filtration rate (eGFR). Doctors may advise kidney function tests in cases of high blood pressure, diabetes, swelling, urinary problems, kidney infections, or suspected kidney disease. Regular KFTs help in the early detection and monitoring of kidney disorders, allowing timely treatment and prevention of complications.