Fractional Excretion of Urea Calculator Sponsored Advertising placement Fractional Excretion of Urea Clinical Decision Tool Calculates fractional excretion of urea from paired serum and urine measurements. Urine urea concentration Serum urea concentration (same units) Urine creatinine concentration Serum creatinine concentration (same units) Calculate Fractional Excretion of Urea Clear Calculator ☆ Log in to save Save this calculator to your MDPDA account. + Add to Toolkit Log in to save incomplete calculator progress and return later. Log in to save progress Clinical Decision Support Only MediCalc calculators are intended to support qualified healthcare professionals and must not replace professional clinical judgement. Do not enter patient-identifiable information into Saved Progress. Read our Clinical Disclaimer Sponsored Advertising placement