Laboratory test
Renal Function Test (RFT)
Renal Function Test (RFT): 11 parameters from a blood sample, no fasting.
Also known as
RFT · Kidney function test · Renal panel · Kidney profile
- Sample
- Blood
- Fasting
- Not required
- Expected report time
- Within 4 hours
- Parameters
- 11
What is the Renal Function Test (RFT)?
Renal Function Test (RFT) includes Blood Urea, Blood Urea Nitrogen (BUN), Serum Creatinine, Uric Acid, Electrolytes (Sodium, Potassium, Chloride) and additional measurements listed below. The listed sample is Serum. The parameter table provides the available units and method details. Discuss the measurements with your clinician in the context of the investigations requested.
What does the Renal Function Test (RFT) measure?
11 parameters. Expand a group to see the measurements, units and available method details.
Other measurements5 parameters
| Parameter | Unit | LOINC |
|---|---|---|
| Blood Urea | mg/dL | 22664-7 |
| Uric Acid | mg/dL | 3084-1 |
| Electrolytes (Sodium, Potassium, Chloride) | — | — |
| BUN / Creatinine Ratio | ratio | — |
| Potassium (K⁺) | mmol/L | 2823-3 |
Kidney Function & Electrolytes6 parameters
| Parameter | Unit | Catalogue method | LOINC |
|---|---|---|---|
| Blood Urea Nitrogen (BUN) | mg/dL | Photometry | 3094-0 |
| Serum Creatinine | mg/dL | Photometry | 2160-0 |
| Urea / Creatinine Ratio | ratio | — | — |
| Estimated GFR (eGFR) | mL/min/1.73m² | — | 62238-1 |
| Sodium (Na⁺) | mmol/L | Indirect ISE (Ion Selective Electrode) | 2951-2 |
| Chloride (Cl⁻) | mmol/L | Indirect ISE (Ion Selective Electrode) | 2075-0 |
The reference interval printed on your actual laboratory report governs interpretation. Intervals can vary by laboratory, method, age, sex and pregnancy. Methods can also vary by processing laboratory.
Renal Function Test (RFT): sample & preparation
Sample: Blood. Fasting: Not required.
- No special preparation is required; fasting is not necessary. Avoid excess protein/red meat intake and strenuous exercise the day before, as these can transiently raise urea and creatinine.
Frequently asked questions
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Book the Renal Function Test (RFT)
11 parameters · No fasting required · Report time: Within 4 hours
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