A 25-Year-Old Man Comes to the Physician Because He and His

A 25-year-old man comes to the physician because he and his wife have been unable to conceive for the last 2 years.  They have no children.  Infertility evaluation is begun, and laboratory studies show a low sperm count.  A more thorough evaluation elucidates a rare genetic abnormality that leads to permanently inactive FSH receptors.  Which of the following substances is most likely decreased in this patient?

A) FSH
B) LH
C) Inhibin B
D) Testosterone
E) DHEA

Correct Answer:

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