A patient comes to her primary care provider complaining of fatigue, cold intolerance, weight gain, and hair loss. Suspecting possible hypothyroidism, the provider orders blood tests to assess her...

A patient comes to her primary care provider complaining of fatigue, cold intolerance, weight gain, and hair loss. Suspecting possible hypothyroidism, the provider orders blood tests to assess her thyroid function. The assay for TSH must be specific for the β subunit, because TSH shares an α subunit with which of the following other hormones?

A. FSH, LH

B. FSH, ACTH

C. ACTH, MSH

D. MSH, LH

E. FSH, MSH