Renal Function Test (RFT)
What is a Renal Function Test?
Why is the RFT test done?
- Evaluate overall kidney health
- Detect kidney infections or chronic kidney disease (CKD)
- Monitor diabetes or high blood pressure
- Check side effects of medicines that may affect kidneys
- Assess dehydration or electrolyte imbalance
What does the RFT test include?
- Blood Urea
- Serum Creatinine
- Uric Acid
Why choose Mitra Diagnostics for RFT/KFT?
- Advanced automated analyzers for precise results
- Pathologist-verified reporting
- Quick turnaround time
- Home collection and online access
- Lifetime discounts with the Mitra Health Card
Contact Us
- 072076 10053
- 040 35511069
- Panchayatiraj Teachers Colony, B.N Reddy Nagar, Hyderabad
More Frequently Asked Questions
Do I need to fast before the test?
Fasting is not mandatory, but it’s preferable to avoid eating for 8–10 hours before the test for accurate results — especially if other fasting tests are done together.
What are normal kidney function values?
Typical reference ranges (may vary slightly by lab):
- Urea: 10–45 mg/dL
- Creatinine: 0.6–1.2 mg/dL
- Uric Acid: 3.5–7.2 mg/Dl
What does a high creatinine level mean?
High creatinine indicates reduced kidney filtration — possible kidney dysfunction, dehydration, or damage due to diabetes, hypertension, or medications.
What does a high urea or BUN mean?
Elevated urea or BUN levels can suggest impaired kidney function, dehydration, or high protein breakdown in the body.
What causes abnormal RFT results?
Common causes include:
- – Diabetes or high blood pressure
- – Long-term painkiller or antibiotic use
- – Kidney infection or blockage
- – Autoimmune diseases affecting kidneys
What are the symptoms of kidney problems?
You may need an RFT if you have:
- – Swelling of feet, face, or hands
- – Reduced or foamy urine output
- – Fatigue or weakness
- – Loss of appetite, nausea, or vomiting
- – Persistent high BP
- – Back or flank pain
How often should I get an RFT done?
- – Annually, as part of your routine health check-up
- – Every 3–6 months if you have diabetes, hypertension, or kidney disease
- – Whenever you start long-term medication that may affect kidney function
How is the RFT sample collected?
- A small blood sample is taken from a vein in your arm.
Sometimes, a urine sample is also requested to check protein or microalbumin levels.
How long will it take to get the report?
At Mitra Diagnostics, RFT results are usually ready within a few hours. Reports are shared online and via WhatsApp for your convenience.
Can I get an RFT test done at home?
Yes! Mitra Diagnostics offers home sample collection by trained phlebotomists. Reports are verified by pathologists and accessible online.
Can dehydration affect RFT results?
Yes. Dehydration can increase urea and creatinine levels temporarily. It’s important to stay hydrated before testing unless advised otherwise by your doctor.
What if my RFT results are abnormal?
Don’t panic. Mild changes can occur due to dehydration or medication.
Your doctor may repeat the test, recommend lifestyle changes, or perform additional tests like urine microalbumin, ultrasound, or eGFR.
Can RFT detect early kidney damage?
Yes. The RFT can identify early functional changes even before symptoms appear — helping prevent long-term kidney disease with timely treatment.
Is the RFT safe during pregnancy?
Yes. It’s a safe and important test to monitor kidney and electrolyte balance during pregnancy.