A 30-year-old female asked:
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at what follicle size should an hcg trigger shot be administered in a medicated cycle?

1 doctor answer
Dr. Neeoo Chin
39 years experience Fertility Medicine
Depends: Usually ultra sound is by the vaginal route these days. If abdominal ultrasound is performed then the follicles are usually approximately 2 mm smaller. On Clomid (clomiphene) or Femara i usually trigger ovulation with HCG approximately 18 to 20 mm. With gonadotropins i normally trigger ovulation around 20 -21mm. Patients with pcos or polycystic ovarian syndrome triggering ovulation needs to be somewhat later at approximately 21 to 22 mm.
Answered on Jun 25, 2017
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Related questions:

A 28-year-old female asked:
Dr. Dennis Higginbotham
29 years experience Obstetrics and Gynecology
Varies: Any follicle that has been recruited to mature, usually only one per cycle, will likely be stimulated to ovulate in rsponse to the HCG "trigger shot". ... Read More
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A 32-year-old female asked:
Dr. Darrin Cunningham
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12 to 36: hours after the HCG injection.
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A 28-year-old female asked:
Dr. Collin Smikle
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COH and HCG: Hcg will cause you to ovulate more than 1 mature follicle. So if you have multiple follicles and took hcg, you would increase your chance for conceivi ... Read More
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A 35-year-old female asked:
Dr. Stephen Richards
41 years experience Obstetrics and Gynecology
Maybe: You may ovulate, if not nothing will happen. Cysts come and go every cycle.

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