Fractional Excretion of Urea (FEUrea) Calculator
FEUrea, useful when diuretics make FENa unreliable.
About Fractional Excretion of Urea (FEUrea) Calculator
FEUrea, useful when diuretics make FENa unreliable. The Fractional Excretion of Urea (FEUrea) Calculator on Picscaler gives you the answer instantly in your browser, with no sign-up.
Inputs: Urine urea (mg/dL), Plasma urea (mg/dL), Urine creatinine (mg/dL) and Plasma creatinine (mg/dL). Results shown: FEUrea and Interpretation.
Formula: FEUrea % = (urine urea x plasma creatinine) / (plasma urea x urine creatinine) x 100. Use the same units for urine and plasma urea, and for both creatinine values.
This tool is for education and information. It does not replace clinical judgement, so confirm results against your laboratory's reference ranges and local guidelines.
How to use Fractional Excretion of Urea (FEUrea) Calculator
- Enter Urine urea (mg/dL), Plasma urea (mg/dL), Urine creatinine (mg/dL) and Plasma creatinine (mg/dL).
- Press Calculate.
- Read FEUrea and Interpretation in the result table.
- Use the formula and notes under the result to check the working.
Frequently asked questions
Is Fractional Excretion of Urea (FEUrea) Calculator free?
Yes. Fractional Excretion of Urea (FEUrea) Calculator is completely free to use on Picscaler.
Do I need to create an account?
No. You can use it straight away without signing up.
Is my data safe?
Your input is processed in your browser on your own device and is not uploaded to Picscaler.
Can I use it for medical decisions?
No. It is an educational aid and does not replace professional medical judgement.
More medical laboratory calculators
- Corrected Calcium Calculator - Calcium adjusted for albumin.
- Anion Gap Calculator - Serum anion gap without potassium.
- Globulin Calculator - Globulin from total protein and albumin.
- Albumin/Globulin Ratio Calculator - A/G ratio.
- BUN/Creatinine Ratio Calculator - Ratio of urea nitrogen to creatinine.
- Estimated GFR Calculator - CKD-EPI 2021 creatinine equation (race-free).