A 29-year-old patient in the outpatient clinic will be scheduled for blood cortisol testing. Which instruction will the nurse provide?
a. "Avoid adding any salt to your foods for 24 hours before the test."
b. "You will need to lie down for 30 minutes before the blood is drawn."
c. "Come to the laboratory to have the blood drawn early in the morning."
d. "Do not have anything to eat or drink before the blood test is obtained."
ANS: C
Cortisol levels are usually drawn in the morning, when levels are highest. The other instructions would be given to patients who were having other endocrine testing.
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