Creatinine clearance calculation with urine creatinine 90 mg/dL, urine volume 1500 mL/day, serum creatinine 0.90 mg/dL, and total body surface 1.73 m^2 yields which value (mL/min)?

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Multiple Choice

Creatinine clearance calculation with urine creatinine 90 mg/dL, urine volume 1500 mL/day, serum creatinine 0.90 mg/dL, and total body surface 1.73 m^2 yields which value (mL/min)?

Creatinine clearance estimates GFR by comparing how much creatinine is excreted in urine to how much is present in the blood, using the formula CrCl = (UCr × V) / Scr, with UCr and Scr in mg/dL and V in mL/min. Here, urine volume is 1500 mL/day, so convert to per minute: 1500 mL/day ÷ 1440 min/day ≈ 1.0417 mL/min. The ratio UCr/Scr is 90 mg/dL divided by 0.90 mg/dL = 100. Multiply: 100 × 1.0417 ≈ 104 mL/min. The total body surface area is 1.73 m^2, so normalizing to 1.73 m^2 leaves the value unchanged. Therefore, the creatinine clearance is about 104 mL/min.

Creatinine clearance calculation with urine creatinine 90 mg/dL, urine volume 1500 mL/day, serum creatinine 0.90 mg/dL, and total body surface 1.73 m^2 yields which value (mL/min)?

Prepare for the BOC Clinical Chemistry Test with our comprehensive quiz. Study with multiple choice questions and detailed explanations. Enhance your readiness and confidence for the exam!

Creatinine clearance calculation with urine creatinine 90 mg/dL, urine volume 1500 mL/day, serum creatinine 0.90 mg/dL, and total body surface 1.73 m^2 yields which value (mL/min)?

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