How do FSH/LH levels differentiate primary gonadal failure from secondary hypogonadism?

Prepare for the Endocrine Disorder Test. Engage with multiple choice questions with hints and explanations, ensuring a thorough understanding of endocrine system concepts. Excel in your exam with confidence!

Multiple Choice

How do FSH/LH levels differentiate primary gonadal failure from secondary hypogonadism?

Explanation:
When the gonads themselves are failing (primary gonadal failure), they can’t respond to stimulation or produce enough sex hormones. That drop in estrogen or testosterone removes the negative feedback on the pituitary, so it ramps up production of the gonadotropins. Both FSH and LH increase, with FSH often more prominently elevated due to loss of inhibin signaling from the gonads. This pattern contrasts with secondary hypogonadism, where the issue is upstream in the hypothalamus or pituitary. There, GnRH or gonadotropin production is inadequate, so FSH and LH are low or inappropriately normal despite low sex steroids.

When the gonads themselves are failing (primary gonadal failure), they can’t respond to stimulation or produce enough sex hormones. That drop in estrogen or testosterone removes the negative feedback on the pituitary, so it ramps up production of the gonadotropins. Both FSH and LH increase, with FSH often more prominently elevated due to loss of inhibin signaling from the gonads. This pattern contrasts with secondary hypogonadism, where the issue is upstream in the hypothalamus or pituitary. There, GnRH or gonadotropin production is inadequate, so FSH and LH are low or inappropriately normal despite low sex steroids.

More Multiple Choice Questions
Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy