A substitute for luteinizing hormone used in fertility assistance to trigger ovulation is called what?

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Multiple Choice

A substitute for luteinizing hormone used in fertility assistance to trigger ovulation is called what?

Explanation:
A substance that mimics the natural LH surge is used to trigger ovulation in fertility treatment. This substitute is human chorionic gonadotropin. HCG binds to the same LH receptors on the mature follicle, prompting final oocyte maturation and ovulation. Its longer half-life makes the timing of ovulation more predictable, typically occurring about 24 to 36 hours after injection, which helps coordinate insemination or egg retrieval. This differs from LH itself, which is the natural surge but is less convenient to time clinically; FSH drives follicle growth and estrogen rises during the cycle but does not trigger ovulation.

A substance that mimics the natural LH surge is used to trigger ovulation in fertility treatment. This substitute is human chorionic gonadotropin. HCG binds to the same LH receptors on the mature follicle, prompting final oocyte maturation and ovulation. Its longer half-life makes the timing of ovulation more predictable, typically occurring about 24 to 36 hours after injection, which helps coordinate insemination or egg retrieval. This differs from LH itself, which is the natural surge but is less convenient to time clinically; FSH drives follicle growth and estrogen rises during the cycle but does not trigger ovulation.

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