Urea Reduction Ratio Sponsored Advertising placement Urea Reduction Ratio Clinical Decision Tool Calculates haemodialysis urea reduction ratio from pre- and post-dialysis measurements. Pre-dialysis Urea same units Post-dialysis Urea same units Calculate Urea Reduction Ratio 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