An observational study in Ovarian Stimulation, sponsored by ART Fertility Clinics LLC. Recruiting at 1 site in United Arab Emirates. Open to female participants aged 18 Years to 39 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2026-06-25.
Sponsored by ART Fertility Clinics LLC · Observational
This study examines if monitoring serum Follicle Stimulation Hormone (FSH) levels can predict oocyte yield and progesterone levels, considering factors like age, baseline FSH, Antral Mullerian Hormone (AMH), antral follicle count, body weight, kidney function, and urinary FSH. The aim is to find a minimum FSH level that ensures optimal ovarian response and enables tailored FSH dosages for better outcomes.
Ovarian stimulation typically uses transvaginal ultrasound to monitor follicle growth and endometrial condition, with some clinics also tracking serum estradiol and progesterone levels, but often neglecting serum Follicle Stimulation Hormone (FSH). FSH is essential for follicle development, yet its levels can vary widely among women receiving the same dose due to factors like body weight, renal function, and ovarian reserve.
This study aims to identify a minimum effective FSH threshold that ensures optimal follicular growth while avoiding excess administration.
ART Fertility Clinics LLC is the lead sponsor of 51 studies on the registry; 20 are open to participants now.
Counted across the registry records on this site, refreshed daily.
Women between 18 and 39 years old, with regular 21 - 35 days cycles, BMI between 19 - 30 kg/m2, serum AMH level between 1.5 to 3 ng/ml, a total antral follicle count between 10 to 24, endogenous early follicular phase serum FSH level \<10 IU/L, normal glomerular filtration rate who is planned to undergo ovarian stimulation in a Gonadotropin hormone-releasing hormone (GnRH) antagonist protocol can be included.
Exclusion will be for women with hypogonadotropic hypogonadism, history of ovarian surgery, permanent ovarian cysts of any form, older than 39 years, abnormal thyroid function (TSH level outside the normal range), renal disease, elevated prolactin levels. intake of oral contraceptives 3 months before stimulation start and estradiol pretreatment will be excluded.
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.
What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.
GFR (glomerular filtration rate) is how much blood the kidneys filter each minute. It is usually estimated from a blood test — eGFR, by formulas such as CKD-EPI or MDRD — and some studies ask for it to be measured directly instead. Usually given in mL/min/1.73 m².
Check the method, the units and the minimum the study states. A value of 90 or above is in the normal-or-high range, but kidney damage can show in other tests too.
Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.
Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.
BMI (body mass index)
Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.
What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
GFR and eGFR (kidney filtering)
GFR (glomerular filtration rate) is how much blood the kidneys filter each minute. It is usually estimated from a blood test — eGFR, by formulas such as CKD-EPI or MDRD — and some studies ask for it to be measured directly instead. Usually given in mL/min/1.73 m².
Check the method, the units and the minimum the study states. A value of 90 or above is in the normal-or-high range, but kidney damage can show in other tests too.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Contraception
Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.
Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Women undergoing ovarian stimulation will be given preselected constant gonadotropin dosage and an association between serum FSH (follicular stimulating hormone) levels during stimulation and response will be assessed. Blood samples will be taken (along with clinical standard routine) on day 2/3 of cycle, day 5 / 8 and 10 of stimulation and on the day of trigger (DoT). Urine samples will be taken additionally. Final oocyte maturation will be triggered with 250 mcg recombinant human Choriogonadotropin and 0.2 mg Decapeptyl as soon as \>2 follicles reach 17 mm diameter. Women who have more than 30 follicles ≥12 mm and or serum estradiol levels above\>5000 pg/ml on the day of trigger will only be triggered with Decapeptyl. OPU (oocyte pick up) will be 36 h after trigger. On the day of oocyte collection (OPU), follicular fluid from the largest follicle will be checked for FSH level after the cumulus oocyte complex is removed.
Drug: Gonal-f (gonadotropin)
Women will be given 300 IU Gonal-F daily from cycle day 2 or 3. Gonal F will be injected at 8 pm daily. They will all receive cetrorelix acetate 250 mcg/day (Cetrotide) subcutaneously from stimulation day 5 onwards until and including the trigger day. Cetrotide will be administered at 08:00 am.
Quantitative Measurement of Serum Follicle-Stimulating Hormone (FSH) Levels During Ovarian Stimulation Using Serum Assays.
serum FSH levels during ovarian stimulation
Time frame: 1 year
Plan to share: No — on request
Started Dec 2024 (actual). Primary completion is estimated for Dec 2026, 23 months after the start.
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