US and Mexico IVF Terms Explained: From Fertility Planning to Embryo Transfer

As assisted reproductive technology continues to advance, more families are taking the initiative to learn about scientific fertility planning instead of waiting until years of unsuccessful natural conception. In recent years, US and Mexico IVF and US and Mexico egg freezing have become increasingly popular options for many families. For those new to assisted reproduction, professional terms such as "starting an IVF cycle," "ovarian stimulation," "blastocyst," and "embryo genetic screening" can feel unfamiliar. Understanding the treatment process in advance can help reduce anxiety and make future planning much easier.

What Does "Starting an IVF Cycle" Mean?

In assisted reproduction, "starting an IVF cycle" generally refers to officially entering an IVF treatment cycle. After completing preliminary examinations, physician evaluations, and an individualized treatment plan, the treatment begins according to the patient's menstrual cycle.

Before starting the cycle, doctors typically evaluate fertility by reviewing AMH (Anti-Müllerian Hormone), antral follicle count (AFC), hormone levels, semen analysis, and both partners' medical histories before determining whether treatment should proceed.

How Is Ovarian Stimulation Performed?

Ovarian stimulation is one of the key steps in US and Mexico IVF. Under normal circumstances, only one dominant follicle matures each month. The goal of ovarian stimulation is to help multiple follicles develop simultaneously, allowing more mature eggs to be retrieved and increasing the chances of producing high-quality embryos.

Doctors create individualized stimulation protocols based on factors such as age, ovarian reserve, and hormone levels. The stimulation phase usually lasts 8 to 12 days, during which ultrasound examinations and hormone monitoring are performed regularly so medication dosages can be adjusted according to follicular development.

Many people planning for pregnancy are also interested in US and Mexico egg freezing. In fact, whether undergoing egg freezing or IVF, the medical principles of ovarian stimulation are essentially the same: to safely obtain an appropriate number of mature, high-quality eggs.

What Happens During Egg Retrieval, Fertilization, and Embryo Culture?

Once most follicles reach maturity, the doctor will schedule the trigger injection, followed by egg retrieval approximately 34 to 36 hours later.

Today, most fertility centers perform egg retrieval under intravenous anesthesia. The procedure generally takes 15 to 30 minutes, and most patients experience little or no pain while under anesthesia. After a short period of rest, most individuals can resume normal daily activities.

After mature eggs are retrieved, fertilization is performed in the laboratory, and the resulting embryos are cultured until around Day 5, when they develop into blastocysts. Compared with earlier-stage embryos, blastocysts provide more information about developmental potential and have therefore become a commonly used culture stage at many fertility centers.

For individuals with inherited genetic disorders, advanced maternal age, recurrent miscarriage, or repeated implantation failure, doctors may also recommend IVF-PGT for embryo genetic screening, providing additional medical information to support embryo selection.

When it is time to seriously plan for building a family, learning about assisted reproductive technology in advance can help create a fertility plan that best fits your individual circumstances. The IVF USA team founded by Dr. Nathan Zhang has been providing international assisted reproductive consultation services for more than a decade, offering services including U.S. egg freezing, U.S. IVF, and third-party assisted reproduction. With nearly 20 years of experience in international reproductive medicine, IVF USA recognized the growing diversity and personalization of reproductive needs early on and strategically expanded into the Mexican market, becoming the Chinese representative of Power Fertility Center (POWER IVF) in Mexico. Today, Dr. Nathan Zhang's services have expanded beyond the United States to include IVF and egg freezing in Mexico, Japan, and Thailand, as well as services in Taiwan and Hong Kong.