Question

question 4 of 10
a client is having diagnostic testing for suspected hyperthyroidism. which of the following diagnostics correlate with this endocrine disorder? select all that apply.

• increases in serum tsh
• increase in radioactive iodine uptake
• increased t4
• decrease in serum thyroid - stimulating hormone (tsh)
• increased t3

Explanation:

To determine the correct options for hyperthyroidism (overactive thyroid):

• Serum TSH: In hyperthyroidism, the thyroid produces excess hormones, so the pituitary gland reduces TSH (thyroid - stimulating hormone) secretion. Thus, "Increases in serum TSH" is incorrect, and "Decrease in serum thyroid - stimulating hormone (TSH)" is correct.
• Radioactive iodine uptake: The thyroid takes up iodine to make hormones. In hyperthyroidism, the gland is overactive and takes up more radioactive iodine, so "Increase in radioactive iodine uptake" is correct.
• T4 and T3: Thyroxine (T4) and triiodothyronine (T3) are thyroid hormones. In hyperthyroidism, their levels are elevated. So "Increased T4" and "Increased T3" are correct.

Answer:

B. Increase in radioactive iodine uptake
C. Increased T4
D. Decrease in serum thyroid - stimulating hormone (TSH)
E. Increased T3