Abstract
To the Editor: Diet is known to affect serum creatinine and urea nitrogen,1 but dietary variations are not usually considered in the differential diagnosis of elevated serum creatinine and urea nitrogen concentrations. I report an instance in which an unusual diet caused such an elevation, simulating chronic renal failure. A 50-year-old asymptomatic woman who was apparently healthy was found during a routine medical checkup to have a serum creatinine concentration of 1.8 mg per deciliter (160 μmol per liter) and a serum urea nitrogen concentration of 35 mg per deciliter (12.4 mmol per liter). The physical examination was normal. She . . .
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