A 70-year-old woman weighing 72 kg has a serum creatinine of 2.0 mg/dL. By the Cockcroft-Gault formula, what is the creatinine clearance?
Answer and explanation
Correct answer: C. 30 mL/min
- Step 1: Cockcroft-Gault: (140 - age) x weight / (72 x creatinine), multiplied by 0.85 for women.
- Step 2: (140 - 70) x 72 / (72 x 2.0) = 30 mL/min.
Answer
30 mL/min.
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