Which of the following diagnostic procedures can be used to measure the levels of hormones in the blood?
a. fasting blood sugar
b. radioactive iodine uptake
c. radioimmunoassay
d. glucose tolerance test
c
Explanation:
a. fasting blood sugar measures the amount of sugar in the bloodstream
b. radioactive iodine uptake: measures how much tagged iodine is removed from the bloodstream by the thyroid gland
c. radioimmunoassay: correct
d. glucose tolerance test: determines a patient's ability to use glucose properly
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