A patient believed to have acromegaly asks the purpose of the diagnostic glucose tolerance test (GTT). What is the most accurate response by the nurse?
a. "The doctor wants to know if you have either diabetes or acromegaly."
b. "The growth hormone will cause the glu-cose to be used up very quickly during the test."
c. "It measures the growth hormone in the presence of oral glucose levels at specified times."
d. "It tells whether your thyroid reacts to the high levels of sugar taken during this test."
C
The level of growth hormone will drop in the presence of oral glucose. In a patient with acrome-galy, the growth hormone level drops dramatically. The GTT is the best diagnostic tool for acromegaly.
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