Progesterone study seeks best way to prepare the uterus for embryo transfer

NCT ID NCT04499131

First seen Feb 03, 2026 · Last updated May 12, 2026 · Updated 14 times

Summary

This study looked at how different doses and methods of giving progesterone (vaginal, under the skin, or muscle injection) affect the structure and function of the uterine lining in women with regular cycles. The goal was to find the best way to prepare the uterus for a future embryo transfer, but no embryos were used—only tissue samples were taken. The study involved 109 healthy women aged 18-35 with no history of infertility.

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Contacts and locations

Locations

  • Instituto Valenciano de Infertilidad Spain

    Valencia, Valencia, 46015, Spain

Conditions

Explore the condition pages connected to this study.