A Kidney Function Test (KFT), also known as a Renal Function Test (RFT), is a group of blood and urine tests used to assess how well the kidneys are working. It helps healthcare professionals evaluate kidney health, identify possible abnormalities early, and monitor people with conditions that may affect kidney function.
What Does a KFT/RFT Include?
Depending on the clinical requirement, a kidney function test may include measurements such as serum creatinine, blood urea, estimated glomerular filtration rate (eGFR), electrolytes, and other relevant parameters. Urine tests may also be recommended to check for protein, blood, or other signs of kidney-related problems.
Why Is a Kidney Function Test Done?
A KFT blood test may be recommended when there are symptoms or risk factors associated with kidney disease. It can also be used to monitor kidney function in people with diabetes, high blood pressure, or other conditions that can affect the kidneys. Doctors may recommend periodic testing when monitoring an existing kidney condition or assessing the effect of certain medicines.
Preparation for the Test
Preparation depends on the specific tests included in your package. Some tests may not require fasting, while others may have specific instructions. Follow the laboratory or healthcare professional's guidance regarding food, fluids, and medications before testing.
Understanding Your Results
KFT/RFT results should be interpreted according to your age, medical history, medications, and other laboratory findings. An abnormal result does not necessarily confirm kidney disease, so your healthcare professional may recommend additional evaluation or repeat testing when appropriate.