Treatment
Egg Freezing
Preserve your fertility on your own timeline.
Egg freezing (oocyte cryopreservation) is a process where eggs are collected from the ovaries, treated with cryoprotectants, and stored in liquid nitrogen at -196°C using vitrification — an ultra-rapid freezing technique that prevents ice crystal formation and preserves cellular integrity.
Frozen eggs remain biologically unchanged for the duration of storage. When you are ready, they can be thawed, fertilised, and cultured into embryos. Research shows no significant difference in outcomes between children born from frozen eggs and those conceived naturally.
Commonly considered by
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Women aged 34+ without immediate pregnancy plans
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Women facing chemotherapy or radiotherapy
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Women with diminished ovarian reserve or premature ovarian ageing
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Women with endometriosis or ovarian cysts requiring surgery
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Women prioritising career, education, or personal circumstances
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Single women who wish to preserve fertility options
Egg freezing is a proactive decision. It does not treat infertility — it preserves your options for the future. Your doctor will assess your ovarian reserve and help you determine whether freezing is appropriate and how many eggs to target.
Candidates for preservation
Optimal age for freezing
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Ages 25–35 yield the highest quality eggs
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After 35, egg quality and quantity decline progressively
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After 40, chromosomal abnormality rates rise significantly
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Freezing earlier = fewer eggs needed for comparable outcomes
Who is egg freezing for?
The first step: AMH testing
AMH (Anti-Müllerian Hormone) is a blood test that measures your ovarian reserve — how many eggs you have remaining. It can be taken at any point in your cycle (no scheduling needed). AMH tells us quantity, not quality. Your doctor will interpret it alongside your age and ultrasound findings.
How it works
The egg freezing process
The entire process takes approximately 2 weeks from your first injection to egg retrieval. It can be completed in a single trip to our clinic.
Step 1 · Consultation & assessment
Your doctor reviews your medical history, performs a transvaginal ultrasound to assess follicle count, and orders blood tests including AMH, FSH, and oestradiol. Based on these results, your doctor will recommend whether egg freezing is appropriate and how many eggs to target.
Duration: 1 day · Can be done locally and results sent to ABC in advance
Step 2 · Ovarian stimulation
You receive daily hormone injections (gonadotropins) for 8–12 days to stimulate multiple follicles to develop simultaneously. During this period, you attend 3–4 monitoring appointments for ultrasound and blood work. Your doctor adjusts medication dosage based on your response.
Duration: 8–12 days · Monitoring every 2–3 days
Step 3 · Trigger injection
When follicles reach target size (typically 18–20mm), a trigger injection is administered to finalise egg maturation. Retrieval is scheduled precisely 34–36 hours later.
Timing is critical — your doctor will confirm the exact schedule
Step 4 · Egg retrieval
Eggs are collected via transvaginal ultrasound-guided aspiration under light IV sedation. The procedure takes 15–20 minutes. No incision. No stitches. A board-certified anesthesiologist is present. You rest for 1–2 hours post-procedure and can return to normal activities the following day.
Duration: 15–20 minutes · Outpatient procedure
Step 5 · Vitrification & storage
Mature eggs are immediately vitrified (flash-frozen) by our embryologists using ultra-rapid cooling. Eggs are stored in liquid nitrogen at -196°C. At this temperature, all biological activity stops. Your eggs remain unchanged for the duration of storage.
Storage: up to 10 years under Thai regulations · Extension with written consent
96.3%
Thawed Egg Survival Rate
Exceeds
international average of 70–85%
73%
Thawed Egg Fertilisation Rate
Exceeds
international average of 70%
-196°C
Liquid Nitrogen Storage
Eggs preserved
for up to 10 years
Our results
Vitrification performance
The quality of egg freezing is measured by one metric: how many eggs survive the thaw intact and go on to fertilise successfully. These numbers reflect our embryologists' technique and our lab's cryopreservation protocols.
Thaw survival rate · 96.3%
The percentage of frozen eggs that survive the thaw process intact. International average is 70–85%. Our rate reflects the precision of our vitrification technique and cryoprotectant protocols.
Source: Study comparing IVF outcomes with and without PGT-A screening. Individual results may vary based on maternal age, egg and sperm quality, and other clinical factors. Consult your fertility specialist for a personalized success estimate.
Thawed egg fertilisation · 73%
The percentage of thawed eggs that successfully fertilise via ICSI. This demonstrates that vitrification does not compromise the egg's ability to be fertilised — a critical quality indicator.
No accelerated egg loss
Egg freezing does not speed up egg depletion or cause early menopause. Each cycle retrieves eggs that would otherwise be lost naturally. Your remaining ovarian reserve is unaffected.
Next step
Considering egg freezing?
Start with an AMH test and consultation. Your doctor will assess your ovarian reserve, explain your options, and help you decide whether egg freezing is the right step — and when.
Initial consultations available in Bangkok and via video call