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?

A 45-year-old woman consulted a physician after blood pressu…

A 45-year-old woman consulted a physician after blood pressure screening at a health fair revealed mild-to-moderate hypertension. The patient had central obesity, thin limbs, a round, ruddy face, and a buffalo hump at the base of the neck. She was not taking any medication. Her blood pressure was elevated. A fasting blood glucose performed by fingerstick in the doctor s office was elevated. The physician ordered serum cortisol levels to be drawn, which were also elevated. What is the patient’s probable diagnosis?