Bonent Practice Test & Exam Prep

URR (urea reduction ratio) is calculated as:

(Pre-BUN − Post-BUN) ÷ Pre-BUN × 100 Post-BUN ÷ Pre-BUN × 100 Pre-BUN ÷ Post-BUN × 100 (Post-BUN − Pre-BUN) ÷ Post-BUN × 100

(Pre-BUN − Post-BUN) ÷ Pre-BUN × 100

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