Embryo Freezing

Embryo freezing is used whenever a person or couple wants to preserve embryos for later use, whether that is weeks, months, or years away. Doctors recommend it for a wide range of medical and personal reasons.

• Surplus embryos from an IVF cycle that are not transferred in the fresh attempt.
• Cancer treatment planned before chemotherapy or radiation that may damage fertility.
• Medical conditions such as endometriosis or premature ovarian insufficiency (early loss of normal ovarian function) that are likely to worsen over time.
• Risk of ovarian hyperstimulation syndrome (OHSS), a reaction to fertility drugs that makes an immediate transfer unsafe.
• Genetic testing of embryos (PGT) required before transfer, which takes time.

The freezing process itself carries minimal direct risk to the patient, but there are recognised risks associated with the broader IVF process and with embryo survival during freezing and thawing.

• Not all embryos survive the freeze-thaw cycle, which may mean fewer embryos are available for transfer than expected.
• Ovarian hyperstimulation syndrome (OHSS) from the hormone injections used to produce eggs, ranging from mild bloating to, rarely, a more serious reaction requiring medical attention.
• Discomfort, bruising, or minor bleeding at the injection sites during the stimulation phase.
• Pelvic discomfort or light bleeding after the egg retrieval procedure.
• Small risk of infection after egg retrieval.

Preparation for embryo freezing begins well before the egg retrieval, because the ovaries need to be stimulated to produce multiple eggs. This phase typically takes around ten to fourteen days and involves daily hormone injections, though the exact schedule varies by clinic and individual response.

Before stimulation starts, most clinics ask patients to stop certain medications that could interfere with hormone levels, including some supplements and blood thinners. Smoking is discouraged throughout, as it can reduce egg quality. Alcohol is usually asked to be avoided from the start of the cycle. Your doctor will give specific guidance based on your medications and history.

Standard tests done before or early in the cycle typically include a blood hormone panel to assess ovarian reserve (the number of eggs remaining), an ultrasound of the ovaries, an assessment of the uterine cavity, and infectious disease screening. Some clinics also request a semen analysis if a partner's sperm is being used.

On the day of egg retrieval, fasting is usually required for several hours beforehand because sedation or light anaesthesia is given. The steps of the full process run roughly as follows.

• Daily hormone injections are given at home or at the clinic to stimulate the ovaries to produce multiple eggs.
• Regular ultrasound scans and blood tests monitor how the follicles (fluid-filled sacs containing eggs) are growing.

Recovery from the egg retrieval part of the process is usually short. Most patients rest for a few hours at the clinic and go home the same day, though some pelvic soreness and bloating can continue for a day or two. The embryos themselves are in storage, so there is no physical recovery linked to that step.

• Rest at the clinic for one to several hours after egg retrieval, then discharge when stable.
• Expect mild cramping and bloating for one to three days after retrieval; this usually resolves on its own.
• Avoid strenuous exercise and heavy lifting for a few days after retrieval.
• Most people return to desk work within one to two days, though this varies.
• The clinic will contact you with a report on how many embryos were frozen and their grading.

The cost of embryo freezing varies widely depending on where it is done, how the body responds to stimulation, and how many treatment cycles are needed. A single quoted price rarely tells the full story because the procedure has many moving parts.

• Country and hospital class: private fertility clinics in medical travel destinations set prices differently from hospitals in Indonesia or in Western countries.
• Number of stimulation cycles: some patients need more than one cycle to obtain a suitable number of embryos.
• Ovarian response: a poor response may require higher doses of stimulation medication or additional monitoring visits, adding to the total.
• Laboratory fees: the cost of embryologist time, fertilisation, embryo culture, and the vitrification process itself.
• Genetic testing (PGT): if embryos are screened for chromosomal abnormalities before freezing, this adds a significant cost.