

Frozen Embryo Transfer (FET) is the process of transferring a previously frozen embryo into the uterus during a carefully prepared cycle. For many patients, FET allows us to choose the timing that best supports implantation—by prioritizing a healthy uterine environment and a transfer plan that fits your biology. At Hanabusa IVF, FET is never “routine.” We use precise monitoring, thoughtful medication use when needed, and a comfort-forward transfer technique—so the embryo is transferred when conditions are truly optimized.

We personalize the transfer cycle to support receptivity—so your embryo is returned when conditions are right.
We monitor the lining and cycle signals closely to choose the right day—because receptivity matters.
Many patients can complete FET with minimal hormonal support (case dependent), keeping the process simpler and more body-respecting.
We use vitrification (flash-freezing) to preserve embryos safely and reliably for future transfer timing.
We use a gentle, specialized transfer approach designed to reduce discomfort and minimize uterine irritation during the procedure.
We prioritize safer pregnancies by recommending single embryo transfer whenever appropriate to reduce risks tied to multiples.

Review your embryo plan (number, stage, quality, any genetic results if available)
Discuss your history, prior transfers, and goals for timing and family building
Identify factors that may affect preparation (cycle patterns, uterine history, medications)
Choose the right FET approach based on your body and timeline:
Natural-cycle FET
Modified natural
Medicated cycle
Confirm the monitoring and medication plan (minimal meds when appropriate)
Ultrasound + labs to confirm a safe start and establish cycle readiness
Ensure the uterus and ovaries are in the right baseline state before moving forward
Track lining development and hormone levels with ultrasound/labs
Use medications only as needed to support lining and timing
Confirm the uterus is ready before scheduling transfer
Time the transfer precisely to match embryo stage and uterine receptivity
Finalize the transfer date and any pre-transfer instructions
Thaw the embryo on the planned schedule
Gentle, in-office embryo transfer (typically quick and well-tolerated)
Follow your personalized support plan (if indicated)
Pregnancy test is scheduled on the appropriate day after transfer
Clear next steps provided for either outcome (early monitoring or plan adjustment)

You have frozen embryos from a prior IVF cycle and are ready to transfer
Your care team recommends freezing embryos to optimize the uterine environment
You’re pursuing single embryo transfer and want the safest approach to pregnancy
You’re using PGT-tested embryos and want carefully timed transfer planning
You want a transfer plan that minimizes unnecessary medication (when appropriate)
You do not yet have embryos available for freezing/transfer
Your evaluation suggests uterine factors need to be addressed first (polyps, fibroids, inflammation—case dependent)
Your plan is better served by a fresh transfer based on your individual cycle (we’ll guide you)

Natural vs. medicated transfer cycle approach
Monitoring needs (ultrasounds + labs)
Medications (if used)
Embryo thawing and lab handling
Storage fees (if applicable)
Additional uterine evaluation or procedures if needed
Often included: embryo thaw + transfer procedure
Often separate: medications, monitoring, storage fees, uterine testing/procedures

FET success rates vary and depend on embryo quality, uterine receptivity, timing, and underlying diagnosis. The goal is to align the embryo and the uterine environment as precisely as possible.
Embryo quality and stage (blastocyst vs. earlier stage)
Whether embryos were PGT-tested (if applicable)
Lining thickness and uterine factors
Hormone timing and ovulation patterns (for natural cycles)
Transfer technique and uterine response
Age at the time the embryos were created

Often a few weeks depending on cycle type (natural vs. medicated)
Monitoring visits to check lining and timing
May be minimal (natural/modified natural) or structured (medicated cycle), depending on your needs
Quick, in-office procedure; most patients return to normal activities the same day
Typically about 9–14 days after transfer (timing varies by protocol)
FET transfers a previously frozen embryo into the uterus during a later cycle after the uterine lining is prepared and timing is optimized.
Sometimes. Many patients benefit from transferring in a later cycle when the uterine environment can be optimized, but the best choice depends on your diagnosis and cycle response.
Not always. Some patients do natural or modified natural FET cycles with minimal medication, while others need a medicated cycle for timing and lining support.
With modern vitrification techniques, embryo survival rates are very high. Your team will guide you based on embryo quality and lab protocols.
Most transfers are quick and feel similar to a Pap test. We use gentle techniques designed to reduce discomfort and uterine irritation.
Single embryo transfer reduces the risks associated with twins or higher-order multiples while supporting safer pregnancies.
Transfer timing is based on your cycle type, hormone patterns, lining development, and the embryo’s stage (for example, timing differs for blastocysts).
Most patients test about 9–14 days after transfer, depending on the protocol and timing of the transfer.
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You’re a fit for Traditional Fertility Care if any of these statements resonate with you:
You’re just getting started
You want clear first steps
You’ve explored clinics, but still feel at the beginning
You need fertility testing
Your labs look reassuring
Your situation feels straightforward
You have fewer complicating factors
You’re considering IUI
You’re new to IVF
You’re planning an FET
You’re considering PGT
If anything, complex becomes evident, we smoothly upgrade your pathway.
You’re a fit for Complex Care if any of these statements resonate with you:
Low AMH/AFC or DOR concerns
You have Diminished Ovarian Reserve (DOR)
You have POI or high FSH concerns
You’re considering Ovarian Rejuvenation (PRP)
Age 40+ or time feels limited
Prior IVF didn’t respond as hoped
Low egg numbers / embryo growth issues
Unsuccessful embryo transfers
Recurrent pregnancy loss (2+ losses)
Male factor needs ICSI or TESE
You’ve been told your case is complex
If your case is complex from the start, we build the right strategy from day one.