Fractional Excretion of Urea (FEUrea) Calculator

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

1. Enter Urine urea (mg/dL), Plasma urea (mg/dL), Urine creatinine (mg/dL) and Plasma creatinine (mg/dL).
2. Press Calculate.
3. Read FEUrea and Interpretation in the result table.
4. 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.