Question 264 · LEK · Hyperthyroidism
A 25-year-old woman comes to her doctor because of palpitations occurring for 6 weeks. TSH concentration is below the normal range and FT4 concentration is over the normal limit. Which of the following diagnoses is the most probable?
- A. euthyreosis.
- B. primary hyperthyroidism.
- C. primary hypothyroidism.
- D. secondary hyperthyroidism.
- E. secondary hypothyroidism.
Hint
Compare the direction of TSH with the direction of FT4 to locate where the defect lies.
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