The Kidney Function Test (KFT) is a comprehensive blood test that evaluates the health and filtering ability of the kidneys. It measures important markers such as creatinine, eGFR, urea, electrolytes, and minerals to assess kidney performance and detect early signs of kidney dysfunction.
This test helps identify conditions such as chronic kidney disease, kidney injury, electrolyte imbalance, dehydration, and disorders affecting kidney filtration.
1.Creatinine, Serum
A waste product produced by muscles and filtered by the kidneys. Increased levels may indicate reduced kidney filtration.
2.eGFR (Estimated Glomerular Filtration Rate)
Estimates how efficiently the kidneys filter blood and is an important indicator of kidney function.
3.Uric Acid
A waste product that may increase due to reduced kidney removal or other metabolic conditions.
4.Potassium
Helps maintain fluid balance, nerve function, muscle activity and heart rhythm.
5.Chloride
Helps maintain fluid balance, nerve function, muscle activity and heart rhythm.
6.Sodium
Helps maintain fluid balance, nerve function, muscle activity and heart rhythm.
7.Calcium
Important for bone strength, muscle function and kidney-related mineral balance.
8.Blood Urea Nitrogen (BUN)
A waste product formed from protein metabolism that the kidneys remove from the blood.
9.BUN/Creatinine Ratio
Compares BUN and creatinine to help doctors understand the cause of kidney-related changes.
10.Blood Urea
A waste product formed from protein metabolism that the kidneys remove from the blood.
11.Phosphorus
Important for bone strength, muscle function and kidney-related mineral balance.
12.Urea/Creatinine Ratio
Compares urea and creatinine to help doctors understand the cause of kidney-related changes.
Also known as: Renal Function Test (RFT), Kidney Profile Test, Kidney Panel, KFT Blood Test
The Kidney Function Test (KFT) is a group of blood tests used to evaluate how effectively the kidneys remove waste products and maintain the body's fluid and electrolyte balance.
The kidneys perform several essential functions, including:
Changes in kidney-related markers can indicate reduced kidney filtration or other kidney-related abnormalities.
The Kidney Function Test measures different parameters related to kidney health:
A Kidney Function Test may be recommended for:
The Kidney Function Test requires a blood sample collected from a vein.
Before the test:
| Parameter | Normal range |
|---|---|
| Serum Creatinine | Approximately 0.6–1.3 mg/dL |
| eGFR | Usually above 90 mL/min/1.73m² |
| Blood Urea | Approximately 15–40 mg/dL |
| BUN | Approximately 7–20 mg/dL |
| BUN/Creatinine Ratio | Approximately 10:1–20:1 |
| Uric Acid | Men 3.4–7.0 mg/dL, Women 2.4–6.0 mg/dL |
| Sodium | Approximately 135–145 mmol/L |
| Potassium | Approximately 3.5–5.1 mmol/L |
| Chloride | Approximately 98–107 mmol/L |
| Calcium | Approximately 8.5–10.5 mg/dL |
| Phosphorus | Approximately 2.5–4.5 mg/dL |
| Urea/Creatinine Ratio | Interpreted according to laboratory reference values |
| Note | Reference ranges may vary depending on laboratory methods, age, gender, hydration status, and medical conditions. Kidney test results should always be interpreted by a healthcare professional. |
Reference ranges can differ between labs. Your report shows the range used by the lab.
A Kidney Function Test is a blood test that evaluates kidney health by measuring waste products, filtration markers, electrolytes, and minerals related to kidney function.
Fasting is not always required, but your doctor may recommend fasting if other tests are performed along with KFT.
High creatinine levels may indicate reduced kidney filtration, dehydration, certain medications, or other conditions affecting kidney function.
eGFR estimates how efficiently the kidneys filter waste from the blood and is commonly used to assess kidney function.
| Test name | Kidney Function Test (KFT) |
|---|---|
| Location | Kolkata |
| Sample type | Blood |
| Number of parameters | 12 |
| Home sample collection | Available |
| Fasting | Not required |
| Report time | Within 24–30 hours |
| Recommended age | 5–99 years |
| Suitable for | Male & Female |
Doctors may recommend a Kidney Function Test to:
The test may be advised if you experience:
Benefits of the Kidney Function Test:
Yes. KFT can help identify changes in kidney function and support early detection when combined with medical evaluation.
Testing frequency depends on your health condition, age, risk factors, and doctor's recommendation.
Yes. Long-term uncontrolled diabetes can damage kidney blood vessels and may lead to diabetic kidney disease. Regular kidney monitoring is recommended for people with diabetes.
