The Kidney Function Test (KFT) measures how well your kidneys are working. Your kidneys filter waste products from your blood, and this test checks if they are doing their job correctly. It helps detect any problems with kidney function early on.
When is it needed?
Suspected kidney diseaseHigh blood pressureDiabetesSwelling in legs or anklesFrequent urinationBefore starting new medications
How to prepare
Fasting for 10-12 hours is needed before this test. You can drink water during this period.
More about this test
The Kidney Function Test (KFT) measures how well your kidneys are working. Your kidneys filter waste products from your blood, and this test checks if they are doing their job correctly. It helps detect any problems with kidney function early on.
Medically reviewed by: Locatemycentre editorial team. Informational only; not medical advice. Always consult a licensed physician for diagnosis or treatment.
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Kidney Function Test (KFT): frequently asked questions
What is a Kidney Function Test (KFT)?
The Kidney Function Test (KFT) measures how well your kidneys are working. Your kidneys filter waste products from your blood, and this test checks if they are doing their job correctly. It helps detect any problems with kidney function early on.
Do I need to fast before a Kidney Function Test (KFT)?
Fasting for 10-12 hours is needed before this test. You can drink water during this period.
How much does a Kidney Function Test (KFT) cost in India?
Prices for Kidney Function Test (KFT) vary widely by city, lab, and accreditation. As a rule of thumb, NABL-accredited labs in metros are more expensive than standalone neighbourhood labs. Use Locatemycentre to compare verified centres near you.
Can I get a Kidney Function Test (KFT) with home sample collection?
Yes. Almost every NABL-accredited diagnostic centre in metros like Bangalore, Delhi, Mumbai, Chennai and Hyderabad offers home sample collection for Kidney Function Test (KFT). Book the night before, especially for any fasting tests, and confirm the visit fee (typically ₹100-₹250).
How long do Kidney Function Test (KFT) results take?
Most routine Kidney Function Test (KFT) reports are ready within 6-24 hours of sample collection. Specialised assays and tests sent to a parent lab may take 2-7 days. Confirm the exact turnaround with the centre before booking - it matters if you have a follow-up consult scheduled.
How will I receive the report?
Reports are emailed as a PDF and are usually downloadable from the centre's patient portal using your registration ID. Hard-copy collection at the counter is usually free; courier delivery is optional. Save the digital copy - your physician will want to see it alongside any prior reports.
Do I need a doctor's prescription for a Kidney Function Test (KFT)?
For most routine versions of Kidney Function Test (KFT) you can walk in without a prescription. Some advanced or restricted tests require a referral by law, and a physician's involvement is always recommended so the result is interpreted against your symptoms and history.
When should I repeat a Kidney Function Test (KFT)?
Repeat timing depends on the clinical reason for the test. For monitoring a known condition, your physician will set the interval (often every 3-6 months). For a screening test that came back normal, repeat as part of your annual health check unless your doctor advises otherwise.