The Physician Has Ordered a Serum Cortisol Level to Rule

The physician has ordered a serum cortisol level to rule out adrenal dysfunction in a patient who is a night security guard who works from 2300 hours to 0700 hours and normally sleeps from 0800 hours to 1600 hours.To ensure the most reliable test results,when does the nurse arrange the blood specimen to be drawn?

A) At 0300 hours
B) At 2300 hours
C) In the early morning
D) In the late afternoon