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Does HCG Play a Vital Role in Every Stage of IVF?

2024-09-10 18:10:50,visits: 207


 

In human reproductive technology, HCG (Human Chorionic Gonadotropin) is an indispensable fertility hormone. It plays a significant role in every phase of IVF (In Vitro Fertilization) treatment, from ovulation stimulation to pregnancy confirmation, acting as a crucial player throughout the entire process.

 

What is HCG?

 

HCG, or Human Chorionic Gonadotropin, is a hormone produced by the embryo during early pregnancy. Its primary function is to maintain luteal function, referring to an essential structure in the ovary following ovulation. The corpus luteum secretes estrogen and progesterone, hormones essential for maintaining a favorable uterine lining, supporting the implantation of the fertilized egg, and sustaining pregnancy. The rising levels of HCG during early pregnancy are crucial for embryonic development and fetal health.

 

The Role of HCG in Different Stages of IVF:

 

Ovulation Stimulation Phase: At the initial stage of IVF treatment, patients typically undergo ovulation stimulation therapy to promote ovarian development and the release of mature eggs. In this phase, HCG mimics the natural ovulation process, triggering the rupture of ovarian follicles and the release of mature eggs. This step is crucial for the subsequent egg retrieval process in the laboratory, hence the need for an HCG injection to ensure egg release.

 

Fertilized Egg Cultivation: While HCG does not directly intervene during the fertilization of eggs with sperm to form fertilized eggs in the laboratory, it indirectly influences the quality of the fertilized eggs. The HCG levels in a woman's body are closely related to the quality of her eggs, thereby affecting embryo development.

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Before Embryo Transfer: Prior to transferring the embryo into the uterus, doctors often check HCG levels. This test confirms whether there is sufficient HCG to support the implantation of the fertilized egg and the continuation of pregnancy. If HCG levels are too low, doctors may recommend postponing the transfer to ensure a higher chance of success.

 

After Embryo Transfer: Once the embryo is successfully transferred into the uterus, HCG continues to play a vital role. About 10 to 14 days after the transfer, doctors perform an HCG test to detect pregnancy. An elevated HCG level may indicate that the fertilized egg has implanted and is producing HCG, a crucial indicator of a successful pregnancy.

 

In some cases, doctors may recommend HCG injections before or after embryo transfer. Before transfer, HCG injections can help prepare the uterine lining, making it more receptive to the fertilized egg. After transfer, HCG injections may continue to support luteal function, sustaining the pregnancy. These injections are usually administered based on the patient's specific condition and the doctor's recommendation.

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HCG plays a diverse range of roles in the IVF process, from ovulation stimulation to pregnancy confirmation, with each step being crucial. Currently, IVF USA offers services such as egg freezing and IVF in the US, with its reach extending to IVF and egg freezing in Japan, Thailand, Mexico, Taiwan, Hong Kong, and other regions, collaborating closely with IVF doctors worldwide. If you have any questions or require further professional advice on IVF, Dr. Nathan Zhang at IVF USA will provide you with detailed support and guidance, ensuring you receive the best assistance throughout your IVF journey.


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