What Role Does HCG Play in US-Mexico IVF?

2026-03-13 21:05:11，浏览量： 1次

 

With the continuous development of assisted reproductive technology, more and more families are beginning to plan their fertility through medical means. For example, US-Mexico IVF and US-Mexico egg freezing are gradually becoming choices that pregnancy preparation groups pay attention to. When understanding the IVF process, many people will encounter an important indicator—HCG. Whether in the ovulation induction stage, after embryo transplantation, or in the final confirmation of pregnancy, HCG plays a role that cannot be ignored. For those preparing to enter the IVF cycle or who have already undergone embryo screening through IVF-PGT, understanding the role of HCG can help them more clearly understand the entire treatment process.

 

What Hormone Is HCG

 

The full name of HCG is human chorionic gonadotropin, a key hormone produced by the human body in early pregnancy. Normally, when the embryo successfully implants in the uterus, the placenta-related tissue begins to secrete HCG, which is also an important basis for early pregnancy tests to determine whether pregnancy has occurred.

 

From a physiological perspective, the most important function of HCG is to maintain corpus luteum activity. The corpus luteum formed after ovulation secretes progesterone and estrogen, which can help the endometrium maintain a state suitable for embryo implantation. Without sufficient HCG support, the corpus luteum may degenerate early, thereby affecting the maintenance of pregnancy.

 

The Role of HCG in the Ovulation Induction Stage

 

In the treatment process of US-Mexico IVF, ovulation induction is a very key step. Through ovulation induction drugs, doctors can allow the ovaries to develop multiple follicles within one cycle, thereby increasing the number of eggs obtained.

 

When the follicles develop to the appropriate stage, doctors usually arrange HCG injection. This step is called "night shot", and its main role is to simulate the natural ovulation signal of the human body and prompt the final maturation of the eggs. Generally, about 36 hours after HCG injection, doctors will perform egg retrieval surgery.

 

The Relationship Between HCG and Embryo Transplantation

 

After embryo culture is completed, doctors will arrange embryo transplantation based on embryo quality. In this stage, whether the endometrial environment is suitable for embryo implantation is very critical.

 

HCG in this link mainly plays the role of supporting corpus luteum function. Some patients will use related drugs before or after transplantation according to the doctor's advice to maintain stable hormone levels in the body, thereby helping the endometrium maintain a good state.

 

HCG Is an Important Indicator for Confirming Pregnancy

 

After embryo transplantation is completed, the most concerning stage is often waiting for the pregnancy test results. Usually 10 to 14 days after transplantation, doctors will judge whether pregnancy has occurred through blood testing of HCG levels.

 

If the HCG value rises significantly and continues to increase in subsequent tests, it usually indicates that the embryo has successfully implanted and begun to develop. Doctors will also evaluate early pregnancy conditions through continuous monitoring of HCG change trends.

In the process of exploring assisted reproductive technology, many families will gradually come into contact with more systematic medical information. The IVF USA team founded by Dr. Nathan Zhang has been engaged in overseas assisted reproduction consulting services for over a decade, providing US egg freezing, US IVF, and third-party assisted reproduction services for those in need. IVF USA, deeply rooted in the overseas assisted reproduction field for nearly 20 years, based on the diversification and personalization of reproductive needs, has early laid out the Mexican market and become the agent in China for Power Fertility Center Mexico POWER Reproductive Center (POWER IVF). Currently, Dr. Nathan Zhang's business has expanded beyond the US to Mexico IVF and egg freezing, Japan and Thailand IVF and egg freezing, as well as Taiwan, Hong Kong, and other regions. For many people facing pregnancy preparation choices, gradually understanding the relationship between medical technology and their own conditions from such a professional perspective often makes future choices clearer, and expectations about family become more composed.