Which of the following is part of the preparation for a glucose tolerance test?
A. Offer the patient a high-carbohydrate snack immediately before drawing the blood
B. Direct the patient to use a laxative the night before to cleanse the digestive system
C. Explain to the patient that only one blood and one urine sample will be taken
D. Instruct the patient to refrain from eating after the initial blood and urine samples are taken
E. Instruct the patient to eat a high-carbohydrate diet for 3 days before the procedure
Answer: E
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