Mexico Surrogacy: How Do Doctors Select Embryos? POWER IVF Guide

In the current social environment where advanced maternal age preparation and infertility issues are increasingly prominent, many prospective parents choose Mexico surrogacy as a reliable fertility path. This is not only because of its inclusive laws and cost advantages, but also because embryo selection in the IVF process directly determines success rates and baby health. Facing multiple embryos, prospective parents often wonder: How do doctors decide which one is most suitable for transfer?

 Preliminary Evaluation During Embryo Culture Stage

Embryo selection begins from culture. After egg retrieval, eggs are fertilized with sperm to form zygotes. POWER IVF laboratory uses time-lapse imaging to monitor development, including cell division speed and symmetry. Day 3 embryos have 6-8 cells, and day 5-6 form blastocysts. POWER IVF uses the Gardner grading system: for example, 5AA grade blastocyst indicates excellent inner cell mass and trophectoderm.

 IVF-PGT Screening: Genetic Health Assurance

Genetic screening is the core of selection. POWER IVF uses IVF-PGT technology, sampling 5-8 cells from the blastocyst stage to test 23 pairs of chromosomes and common genetic diseases. Abnormal embryos like Down syndrome are excluded, and normal embryos have high implantation rates and low miscarriage risks.

 Endometrial Matching and Hormone Assessment

Selection is not only about the embryo itself but also about matching the uterine endometrium. Before transfer, the surrogate mother undergoes ultrasound to measure endometrial thickness (ideal 8-12mm) and hormone levels. POWER IVF doctors select the window with good endometrial receptivity for transfer. Hormones like progesterone support implantation; if not matched, the cycle is adjusted. The advantage of Mexico surrogacy is that surrogate mothers are young, with good endometrial environments and high matching rates.

 Consideration of Personalized Factors

The selection process also involves ethics. POWER IVF emphasizes prospective parents' participation in decision-making, discussing embryo gender (Mexico law allows) or handling of extra embryos. Psychological support helps alleviate anxiety, and many families choose to freeze remaining embryos as reserve for second child.

 Post-Selection Transfer Strategy

After selection, single embryo transfer is usually performed to reduce multiple pregnancy risks. Subsequent HCG and ultrasound confirm implantation. In Mexico IVF cycles, we provide full monitoring, allowing prospective parents to wait with peace of mind, using professional companionship to help you find a suitable path.

Power Fertility Center stands as a premier fertility hub in the U.S. and Mexico, operated under U.S. IVF standards for top-tier care. Located with cutting-edge embryology labs in both nations, Power IVF delivers one-stop fertility services—IVF, IUI, sex selection, U.S. egg freezing, sperm freezing, egg donation, sperm donation, embryo donation, and surrogacy—to singles, couples, and LGBTQ communities. It offers IVF-PGT and fertility preparation support in Japan, Thailand, Taiwan, and beyond. With advanced tech and a warm, tailored approach, Power IVF’s Guarantee Program in Mexico ensures live births via egg donation and surrogacy, backed by 24/7 patient care.