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Hypothyroidism — ABFM Board MCQ

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EasyEndocrine/MetabolicHypothyroidismABFM Board

A 42-year-old woman reports fatigue, constipation, weight gain, and heavy menses. Examination shows dry skin and delayed relaxation of deep tendon reflexes. TSH is elevated and free T4 is low. Which of the following is the most appropriate next step?

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Correct answer: B — Start levothyroxine therapy

Primary hypothyroidism with elevated TSH and low free T4 is treated with levothyroxine.

Reference: American Family Physician clinical reviews and AAFP guidance: https://www.aafp.org/pubs/afp.html