A urine sample is diluted 1:3 before testing.The test results identify 50 μg phenylpyruvate.What is the dilution factor that the result must be multiplied by to determine the true concentration of phenylpyruvate in the urine?

Question

Quizplus · Accepted Answer

The dilution factor is the reciprocal of the dilution ratio. Since the sample was diluted 1:3, the concentration found in the diluted sample must be multiplied by 3 to find the true concentration in the undiluted sample.

A Urine Sample Is Diluted 1:3 Before Testing