Egg retrieval, medically known as Oocyte Pick-Up (OPU), is a cornerstone of the Invitro Fertilization (IVF) process. It is the surgical procedure where mature follicles are aspirated from the ovaries to obtain the eggs necessary for fertilization in the laboratory. For many patients traveling to Istanbul for fertility treatment, understanding the nuances of this procedure helps alleviate anxiety and ensures better preparation for the journey ahead.
What is the Egg Retrieval (OPU) Procedure?
The OPU procedure is a minor surgical intervention performed under light sedation or general anesthesia. It typically occurs after 8 to 14 days of controlled ovarian stimulation, during which the patient self-administers hormonal medications to encourage the growth of multiple follicles. Once the follicles reach an optimal size, a "trigger shot" of hCG or a GnRH agonist is administered to finalize egg maturation. The retrieval is precisely timed 34 to 36 hours after this injection.
Steps of the Oocyte Pick-Up Process
The procedure is efficient and usually takes between 15 and 30 minutes, depending on the number of follicles present. At our center in Turkey, we prioritize patient comfort and precision throughout the following steps:
1. Preparation and Anesthesia
Patients are asked to fast (no food or water) for at least 6 hours prior to the procedure. Once in the procedure room, a specialized anesthesiologist administers sedation. This ensures the patient remains comfortable and still, which is vital for the safety of the procedure.
2. Ultrasound-Guided Aspiration
The fertility specialist uses a transvaginal ultrasound probe equipped with a fine, sterile needle. The needle is guided through the vaginal wall directly into the ovarian follicles. Using a gentle suction device, the follicular fluid—which contains the microscopic egg—is drawn into test tubes.
3. Immediate Laboratory Identification
The collected fluid is immediately handed to the embryologist in the adjacent IVF laboratory. Under a microscope, the embryologist identifies and isolates the oocytes. These eggs are then placed in a specialized culture medium and kept in an incubator to maintain physiological conditions.
Recovery After Egg Retrieval
Following the OPU, patients are moved to a recovery room for 1 to 2 hours until the effects of the anesthesia wear off. While most patients can return to their hotel in Istanbul the same day, we recommend a full day of rest. Common post-operative symptoms may include:
- Mild pelvic cramping or pressure.
- Light spotting or vaginal discharge.
- Mild bloating.
If you experience severe pain, heavy bleeding, or high fever, it is imperative to contact your medical team immediately. For more information on what happens after the eggs are collected, you can read about the complete IVF treatment stages.
Why Choose Istanbul for Egg Retrieval?
Turkey has become a global hub for reproductive medicine for several reasons. Clinics in Istanbul offer world-class laboratory infrastructure and highly experienced specialists who perform thousands of OPU procedures annually. Furthermore, the cost-effectiveness of treatment compared to the UK, Europe, or the US allows patients to access advanced technologies—such as ICSI (Intracytoplasmic Sperm Injection)—which are often performed immediately following the egg retrieval to maximize fertilization potential.
Factors Influencing Success
It is important to note that the number of eggs retrieved does not always correlate directly with the number of viable embryos. Success depends on individual factors, including ovarian reserve (AMH levels), female age, and the body’s response to stimulation medications. While the goal is to retrieve a healthy number of mature eggs, the quality of the oocytes is often more significant than the quantity when it comes to achieving a successful pregnancy.
In cases where the male partner has a low sperm count, specialized techniques like Micro-TESE may be scheduled alongside or prior to the retrieval to ensure viable sperm is available for fertilization.
Frequently Asked Questions About Egg Retrieval
Is the OPU procedure painful?
Because the procedure is performed under sedation or general anesthesia, patients do not feel any pain during the aspiration. Afterward, some mild "period-like" cramping is normal, which can usually be managed with paracetamol as advised by your doctor.
How many eggs are usually retrieved?
The number of eggs varies significantly between patients. On average, 8 to 15 eggs are retrieved from a woman with a normal ovarian reserve, but this number can be higher or lower depending on the person's clinical profile and age.
When can I travel back home after the retrieval?
While the procedure itself is quick, we generally recommend staying in Turkey for at least 3-5 days after the egg retrieval. This allows for the monitoring of potential side effects like Ovarian Hyperstimulation Syndrome (OHSS) and provides time for the embryo transfer if you are undergoing a "fresh" cycle.