Updated by the Progyny Editorial Team — September 2025.
Starting in vitro fertilization (IVF) can feel exciting but also overwhelming. To help improve your chance of success, your reproductive endocrinologist (fertility specialist) may recommend a mock cycle before the actual embryo transfer. Dr. Tamar Matitashvili, a reproductive endocrinologist (REI) at Dominion Fertility, explains the purpose and benefits of a mock cycle and why this step matters in the IVF process.
What is an IVF mock cycle?
An IVF mock cycle, also called a mock embryo transfer, simulates the transfer process without placing embryos. It involves preparing your uterine lining, evaluating the uterine cavity, and practicing the transfer technique. While it may seem like an extra step, a mock cycle can provide valuable information to guide your treatment plan.
Evaluating your uterus and cervix
One goal of a mock cycle is to check the size and shape of your uterus and the anatomy of your cervix. Your specialist uses a thin catheter to pass through the cervix and into the uterus, which mimics the embryo transfer process. This helps identify any challenges that could make the transfer harder. A smooth transfer improves the chance of implantation and pregnancy. If issues are found, your REI can address them before your actual IVF cycle.
Preparing the uterine lining
The mock cycle also shows how your uterine lining responds to hormone medications. Your fertility care team can adjust the type or dose of medication to make sure your lining is receptive at the time of transfer. In some cases, they may take a small sample of the lining to determine your window of implantation — the time when your uterus is most likely to accept an embryo.
Practice for both you and your care team
A mock cycle helps your fertility care team practice with the catheter and equipment, so they know exactly what works best for you. It also gives you a chance to become familiar with the clinic, the procedure, and the people involved. This can reduce stress and make you feel more comfortable when it’s time for the actual transfer.
Timing and logistics
Your clinic may use the mock cycle to fine-tune the timing and workflow of your treatment. Identifying potential obstacles ahead of time makes the real IVF cycle more efficient and less stressful.
A mock cycle is an important preparation step in IVF. By assessing your uterine anatomy, optimizing your lining, and rehearsing the transfer, it helps improve the chances of a successful embryo transfer and pregnancy.
This video features Dr. Joe Hill, of Fertility Centers of New England.
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Disclaimer: The information provided by Progyny is for educational purposes only and is not medical advice. Always consult a qualified healthcare provider for medical guidance.