A sample analyzed at 10 A.M. had a value for total bilirubin…
A sample analyzed at 10 A.M. had a value for total bilirubin of 15 mg/dL. The sample was left on the counter and late that afternoon the specimen was analyzed again. This time the total bilirubin was 9 mg/dL. Which of the following is the probable cause of the discrepancy between the two readings?