POWER IVF｜Is Repeated Biochemical Pregnancy a Miscarriage? Dr. Nathan Zhang Discusses USA & Mexico IVF Egg Freezing

2025-05-06 19:34:29，visits： 25

In the journey of longing for a baby, a perplexing phenomenon sometimes occurs – a "biochemical pregnancy." The pregnancy test shows positive, yet the subsequent ultrasound reveals no gestational sac, as if nothing ever happened. For women who have experienced multiple pregnancies, this "mysterious disappearance" brings even deeper distress. So, what exactly does "biochemical" mean? And should repeated biochemical pregnancies lead couples to consider IVF assistance, such as the increasingly popular Mexico IVF technology?

 

A "biochemical pregnancy," also known as a chemical pregnancy or early pregnancy loss, refers to a situation where a fertilized egg successfully implants, and the mother's urine or blood HCG test indicates pregnancy, but the embryo fails to develop further and is naturally expelled before a clinical pregnancy (gestational sac visible on ultrasound) is established.

 

The occurrence of "biochemical pregnancy" is not accidental; several underlying factors may be involved:

 

1.  Embryo Chromosomal Abnormalities: This is one of the most common causes. Embryos with chromosomal abnormalities often struggle to survive and develop.

2.  Hormone Imbalance: Abnormal fluctuations in hormone levels, such as progesterone, can affect the normal implantation and development of the embryo.

3.  Uterine Lining Issues: Poor endometrial receptivity, such as insufficient endometrial thickness or the presence of other lesions, can hinder embryo implantation and development.

4.  Advanced Maternal Age: As women age, the quality of their eggs declines, and the risk of embryo chromosomal abnormalities and biochemical pregnancies increases accordingly.

 

The Difference Between "Biochemical Pregnancy" and Clinical Miscarriage

 

Although both involve early pregnancy loss, "biochemical pregnancy" and clinically diagnosed miscarriage differ significantly in the timing of occurrence and the extent of embryonic development:

 

 Biochemical Pregnancy: Occurs very early in pregnancy (usually within 2-6 weeks after fertilization), before the embryo has formed a clear structure. Therefore, a gestational sac is often not visible on ultrasound.

 Clinical Miscarriage: Refers to the loss of a pregnancy after the embryo has developed in the uterus for a period of time (usually before 12 weeks of gestation). At this stage, the embryo has already formed the beginnings of a fetus, and a gestational sac and fetal pole are typically visible on ultrasound.

For couples who repeatedly experience "biochemical pregnancies," In Vitro Fertilization (IVF) technology, especially the rapidly developing third-generation IVF technology, may be a worthwhile assisted reproductive option to consider. Dr. Nathan Zhang and the IVF USA team have been engaged in overseas assisted reproductive consultation services for more than ten years, providing services such as USA egg freezing, USA IVF, and third-party assisted reproduction to those in need. With nearly 20 years of deep cultivation in the overseas assisted reproductive field, IVF USA established a presence in the Mexican market early on, becoming the agent in China for Power Fertility Center Mexico (POWER IVF). Currently, Dr. Nathan Zhang's business has expanded beyond the United States to Mexico IVF and egg freezing, Japan and Thailand IVF and egg freezing, as well as Taiwan and Hong Kong, helping you achieve your dream of having a baby as soon as possible.