A patient has a free T4 level of 0.6 ng/dL and a free T3 of 220 pg/dL. The patient asks the nurse what these laboratory values mean. How will the nurse respond?
a. "These laboratory values indicate that you may have Graves' disease."
b. "These results suggest you may have hyperthyroidism."
c. "We will need to obtain a total T4 and a total T3 to tell for sure."
d. "We will need to obtain a TSH level to better evaluate your diagnosis."
D
A free T4 level of less than 0.9 ng/dL and a free T3 of less than 230 pg/dL are consistent with hypothyroidism, but measurement of the thyroid-stimulating hormone (TSH) level is necessary to distinguish primary hypothyroidism from secondary hypothyroidism. Total T3 and T4 levels are not as helpful as free T3 and T4 levels. These laboratory values indicate hypothyroidism, not hyperthyroid conditions such as Graves' disease.
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The act of chewing is also known as ________________
Fill in the blank(s) with correct word