At a glance
A mock embryo transfer is a trial run that helps your doctor plan the real transfer. Learn what it involves, how to prepare, and what questions to ask your clinic in Thailand.
What Is a Mock Embryo Transfer?
A mock embryo transfer (also called a trial transfer or dummy transfer) is a procedure performed before the actual embryo transfer in an IVF cycle. Its purpose is to map the uterine cavity, measure the depth and angle of the cervical canal, and determine the optimal catheter and technique for the real transfer. This rehearsal helps increase the likelihood of a smooth, atraumatic transfer on the day of the actual embryo transfer.
Why Is a Mock Transfer Done?
The mock transfer provides your fertility specialist with critical information that can improve the success of the real transfer. It can identify potential challenges such as a sharply angled cervix, uterine fibroids, or a narrow cervical os. By practicing the transfer, the doctor can select the best catheter and approach, reducing the risk of trauma to the endometrium and improving embryo placement. Many clinics routinely perform a mock transfer in a cycle prior to the embryo transfer cycle, or sometimes on the same day as the real transfer.
How Is the Procedure Performed?
The mock transfer is typically performed in a clinic examination room and does not require anesthesia. You will lie on an examination table with your legs in stirrups, similar to a pelvic exam. The doctor will insert a speculum to visualize the cervix, then pass a thin, flexible catheter through the cervix into the uterine cavity. The depth of the uterine cavity is measured, and the angle of entry is noted. The doctor may also perform an ultrasound to confirm the catheter position. The entire procedure usually takes only a few minutes and causes minimal discomfort, though some women experience mild cramping.
How to Prepare for a Mock Embryo Transfer
Before the Procedure
- Confirm timing with your clinic: The mock transfer is often done in a cycle before the actual transfer, sometimes during a natural cycle or a medicated cycle. Ask your clinic when they recommend scheduling it.
- Bladder fullness: Some clinics prefer a full bladder for ultrasound guidance, while others do not. Check with your clinic for specific instructions.
- Medication: You may not need any special medication for the mock transfer, but if it is done in a cycle where you are taking hormones, follow your doctor’s instructions.
- Pain management: Most women do not require pain relief, but you can ask your doctor about taking a mild pain reliever if you are anxious about discomfort.
During the Procedure
- Relax your pelvic muscles as much as possible. Deep breathing can help.
- Communicate any significant discomfort to your doctor.
- The procedure is quick; try to stay still.
After the Procedure
- You can resume normal activities immediately. There is no recovery time needed.
- Mild spotting or cramping is possible but usually resolves quickly.
- Your doctor will discuss the findings and how they will affect the plan for the real transfer.
Questions to Ask Your Clinic
- When in my cycle will the mock transfer be performed?
- Will it be done in the same cycle as the real transfer or in a separate cycle?
- Do I need a full bladder for the procedure?
- Will ultrasound be used?
- What information will you obtain from the mock transfer?
- How will the results change the plan for my real embryo transfer?
- Is there any risk of infection or injury?
What to Expect After the Mock Transfer
The mock transfer itself does not affect your fertility or the success of the real transfer. It is purely diagnostic. Your doctor will use the measurements and observations to choose the best catheter and technique for the actual embryo transfer. In some cases, if the mock transfer reveals a difficult cervical passage, your doctor may recommend a different approach, such as using a tenaculum or performing a cervical dilation procedure beforehand.
Travel Considerations for International Patients
If you are traveling to Thailand for IVF, the mock transfer may be scheduled during a preliminary visit or during the cycle before your embryo transfer. Discuss the timeline with your clinic to plan your travel. Some clinics can perform the mock transfer and the real transfer in the same trip if the mock is done early in the cycle. Others may require a separate visit. Confirm with your clinic whether the mock transfer is included in your treatment package or if there is an additional fee.
Next Steps
- Schedule a consultation with your chosen clinic to discuss the mock transfer plan.
- Ask for written instructions on preparation and timing.
- Arrange your travel and accommodation to accommodate the procedure dates.
- Keep a record of any findings from the mock transfer for your own reference.
Frequently asked questions
Is a mock embryo transfer painful?
Most women experience only mild discomfort, similar to a Pap smear. Some may feel slight cramping when the catheter passes through the cervix. The procedure is quick, usually lasting a few minutes.
When is a mock embryo transfer performed?
It is often done in a cycle prior to the actual embryo transfer, sometimes during a natural cycle or a medicated cycle. Some clinics perform it on the same day as the real transfer, just before the embryo is transferred.
Do I need to take time off work for a mock transfer?
No, the procedure is brief and you can resume normal activities immediately. However, if you are traveling internationally, you may need to factor in travel and rest time.
Can a mock transfer affect my chances of pregnancy?
No, the mock transfer itself does not affect pregnancy chances. It is a diagnostic tool to help improve the success of the real transfer by allowing your doctor to plan the best approach.
Is a mock transfer always necessary?
Many clinics recommend it as a routine part of IVF preparation, especially for patients with a history of difficult transfers, uterine abnormalities, or when using frozen embryos. However, not all clinics require it. Discuss with your doctor whether it is recommended for you.
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Medical information notice: This article is educational and does not replace individual assessment, diagnosis, genetic counselling or treatment advice from a licensed clinician. Provider services, availability, fees and policies should be verified directly before booking.
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