A patient's creatinine is outside the linear range of the analyzer; 10 µL of serum is added to 90.0 µL of diluent and the diluted sample is reanalyzed. The creatinine value of the diluted sample is 1.0 mg/dL. Which of the following creatinine values is correct?
A) 1.0 mg/dL
B) 10.0 mg/dL
C) 20.0 mg/dL
D) 100 mg/dL

Question

Quizplus · Accepted Answer

The dilution factor is 10 (10 µL serum in 100 µL total volume). Therefore, the original concentration is 1.0 mg/dL multiplied by the dilution factor of 10, resulting in 10.0 mg/dL.

A Patient's Creatinine Is Outside the Linear Range of the Analyzer;