The Nurse Is Caring for a Client in the Outpatient

The nurse is caring for a client in the outpatient clinic who has a prescription for blood cortisol testing. Which of the following instructions should the nurse provide for the client?

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."