An Investigation of the Effect of Vitamin D Level During Frozen Embryo Transfer (FET) in IVF and Pregnancy Outcomes

Recruiting now

Conditions studied: Vitamin D Insufficiency, In Vitro Fertilization and Embryo Transfer

In brief

Vitamin D is best known for keeping our bones healthy, but growing research suggests it may also play a role in fertility. Many In vitro fertilization (IVF) clinics now routinely check vitamin D levels and prescribe supplements before treatment, but the science is still unclear on whether this actually improves the chances of pregnancy. Our study, based in the United Arab Emirates (UAE), aims to find out whether a woman's vitamin D level on the day of her frozen embryo transfer (FET) makes a difference to whether she becomes pregnant and delivers a baby. The UAE is an ideal setting for this research, as vitamin D deficiency is particularly common in the region. The findings could shape how fertility clinics screen and treat women seeking fertility treatment in the future.

Key facts

Study ID
NCT07681115
Run by
Fakih IVF Fertility Center
People needed
126
Starts
2026-06-01
Expected to finish
2027-08-01
Last updated by the study team
2026-07-15

Who can join

Age: 18 and older, up to 40. Sex: female. Healthy volunteers: not accepted.

Where it is running

Full record on ClinicalTrials.gov

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