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ivf fertility
Frozen Embryo Transfer
Embryo transfer refers to a step in the process of assisted reproduction in which embryos are placed into the uterus of a female with the intent to establish a pregnancy. This technique - which is often used in connection with in vitro fertilization (IVF) - may be used in humans or in other animals, in which situations and goals may vary.
Quick Facts
- Price range
- Varies by clinic
- Recovery
- Varies
- Sessions
- Varies
- Category
- ivf fertility
- Anaesthesia
- Varies
- Min. stay abroad
- Varies
- Price Range (International)
- Varies by clinic
- Average Recovery
- Varies
- Typical Sessions
- Varies
- Category
- ivf fertility
Overview
Embryo transfer is the step in assisted reproduction in which one or more embryos are placed into the uterus with the intent of establishing a pregnancy, most often in connection with in-vitro fertilisation (IVF). The transfer can be performed at the cleavage stage, on day two or three of embryo development, or at the blastocyst stage, on days five to six — a technique first performed in 1984. Its success is influenced by endometrial receptivity, embryo quality and the transfer technique itself. During the procedure a speculum is placed to visualise the cervix, which is cleansed with saline solution or culture media. A transfer catheter is loaded with the embryos and, after the patient's identity is confirmed, is passed through the cervical canal and advanced into the uterine cavity, where the embryos are expelled and deposited. Several measures are supported by evidence to improve results: using a soft rather than a hard catheter, guiding the transfer with abdominal ultrasound to confirm placement about 1 to 2 centimetres from the uterine fundus, removing cervical mucus, and using transfer media enriched with hyaluronic acid. Single embryo transfers in particular require accuracy and precision in placement within the uterine cavity. Anaesthesia is generally not required, and immediate walking is possible once the transfer is complete.
Key Considerations
Common Risks
Credentials a clinic should hold
Specialty-board certifications and facility-level accreditations relevant to this procedure. Verify on the issuer's public register before booking — most issuers publish a searchable directory.
HFEA-licensed fertility centre
Issuer Human Fertilisation and Embryology Authority (UK)
UK statutory licence for any clinic providing IVF, ICSI, donor cycles, or embryo storage. The HFEA publishes per-clinic success and adverse-event data.
Verify on the issuer's register →SART member clinic
Issuer Society for Assisted Reproductive Technology
US fertility-clinic professional society; member clinics submit standardised outcomes to the CDC ART national registry.
Verify on the issuer's register →ESHRE-certified ART centre
Issuer European Society of Human Reproduction and Embryology
European fertility-clinic certification covering laboratory standards, embryology QC, and clinical-outcome reporting.
Verify on the issuer's register →
Current clinical trials
Ongoing research studies registered on ClinicalTrials.gov whose intervention involves frozen embryo transfer. This is a neutral pointer to public research — not an endorsement, not a recruitment drive, and not medical advice. Trial status changes often; confirm eligibility and current status with the study team via each record.
- Not yet recruitingPhase 2Interventional· Started 2026-04-15Effect of FB301 on Vaginal Bacterial Profile in Women With Asymptomatic Vaginal Dysbiosis Undergoing a Mock Frozen Embryo Transfer CycleNCT07453069· Freya Biosciences ApS· Vaginal Dysbiosis
- Enrolling by invitationObservational· Started 2026-03-19Effects of Trophectoderm (TE) Biopsy on the Health and Development of Children Born After Preimplantation Genetic Testing (PGT) Cycles.NCT07349966· IRCCS San Raffaele· Preimplantation Genetic Testing (PGT), Frozen Embryo Transfer Cycle, Assisted Reproduction Technologies
- Not yet recruitingInterventional· Started 2025-07-05Comparison of Two Protocols in Frozen Embryo TransferNCT07003373· Malihe Mahmoudinia· IVF Outcomes
- RecruitingObservational· Started 2024-02-23Assessing the Convenience of Natural Proliferative Phase Frozen Embryo TransferNCT06307184· Instituto Valenciano de Infertilidade de Lisboa· Frozen Embryo Transfer
- RecruitingPhase 3Interventional· Started 2023-10-01Effect of Pentoxyfilline on Endometrial Thickness and Frozen Embryo Transfer OutcomesNCT07499817· Beni-Suef University· Embryo Transfer, IVF, Infertility
- RecruitingPhase 3Interventional· Started 2022-10-25Treatment Preventive for Pre-eclampsia by Acetylsalicylic Acid in Women Who Underwent Frozen Embryo TransferNCT05460416· Centre Hospitalier Universitaire de Liege· Embryo Transfer, Hypertension, Pregnancy Induced
Showing 6 recent ongoing studies. Source: ClinicalTrials.gov — all matching trials (U.S. National Library of Medicine, public domain). Retrieved 2026-08-02.
Recovery Timeline
Average recovery for Frozen Embryo Transfer is 0 days. Individual recovery varies — always follow your surgeon’s specific guidance.
- 01Day 0–1
Immediate
First 24–48 hours post-procedure. Monitoring, anaesthesia recovery, initial pain management. Most clinics expect you to remain on-site or nearby.
- 02Day 2–2
Early recovery
Wound care, swelling or bruising peaks, restricted activity. Typical window for follow-up visits and drain removal if applicable. Travel is usually not advised.
- 03Day 3–3
Intermediate recovery
Gradual return to non-strenuous daily activity. Many international patients fly home during this window. Surgeon may require medical clearance for long-haul travel.
- 04Day 4–0
Full recovery
Return to full activity, exercise, and work. Final results may still be settling. Final follow-up with local doctor recommended.
Questions to Ask Your Clinic
Browse all destinations offering Frozen Embryo Transfer →Detailed cost breakdown →
Frequently Asked Questions
What is embryo transfer?
It is a step in assisted reproduction in which embryos are placed into the uterus of a woman with the intent of establishing a pregnancy. It is often used in connection with in-vitro fertilisation (IVF).
When during development are embryos transferred?
Transfer can be performed at the cleavage stage, on day two or three, or at the blastocyst stage, on days five to six. Blastocyst-stage transfer was first performed in 1984.
How is the transfer performed?
A speculum is placed to visualise the cervix, which is cleansed with saline or culture media. A transfer catheter is loaded with the embryos, and after the patient's identity is confirmed it is passed through the cervical canal into the uterine cavity, where the embryos are expelled and deposited.
Is anaesthesia needed?
Anaesthesia is generally not required for embryo transfer, and immediate walking is possible once the procedure is complete.
What improves the chance of success?
Success is influenced by endometrial receptivity, embryo quality and the transfer technique. Measures supported by evidence include using a soft transfer catheter, abdominal ultrasound guidance, placement about 1 to 2 centimetres from the uterine fundus, removal of cervical mucus, and transfer media enriched with hyaluronic acid.
Does ultrasound guidance help?
Yes. There is good and consistent evidence that using abdominal ultrasound guidance to ensure correct placement significantly increases clinical pregnancy compared with relying on 'clinical touch' alone.
Conditions treated
Clinical conditions for which frozen embryo transfer is a treatment-ladder option.
Related Procedures
Other ivf fertility procedures in our registry