What Tests Are Needed Before Embryo Transfer? | COSTA HEALTH Mexico Surrogacy

For women preparing to become surrogate mothers, embryo transfer is an important stage of the surrogacy process. Before the transfer, several factors need to be assessed, including whether the body is ready, whether the endometrium is in suitable condition, and whether hormone levels are stable. These factors can all influence subsequent medical arrangements. COSTA HEALTH places great importance on evaluating surrogate mothers’ health and preparing them for embryo transfer. Understanding the following key indicators can help you become more familiar with the physical requirements before embryo transfer.

1. Endometrial Thickness: Preparing for Embryo Implantation

The endometrium provides an important environment for embryo implantation. Before transfer, doctors typically use transvaginal ultrasound to examine endometrial thickness, appearance, and blood flow.

Generally, an endometrial thickness of approximately 7–8 mm or more at the time of embryo transfer is considered favorable. Thickness is not the only factor that matters; the appearance of the endometrium is also important. Doctors assess whether the endometrium is in a suitable condition for transfer and determine the timing based on the medication cycle.

2. Hormone Levels: Understanding Your Endocrine Status

Hormone levels such as estradiol (E2) and progesterone (P) are among the common indicators checked before embryo transfer.

Estradiol is closely related to endometrial growth, while progesterone helps prepare the endometrium for embryo implantation. Doctors arrange hormone medication and determine the transfer timing according to the treatment plan and test results, ensuring that endometrial development is aligned with the embryo's developmental stage.

3. Uterine Health: Assessing the Implantation Environment

In addition to endometrial thickness, the overall health of the uterus is equally important. Before embryo transfer, an ultrasound examination may be performed to assess the shape of the uterus and check for uterine fibroids, endometrial polyps, or other conditions that could affect the uterine cavity.

In some cases, doctors may also recommend further examinations, such as hysteroscopy, to obtain a clearer view of the inside of the uterine cavity. A healthy uterine environment provides important support for embryo transfer.

4. General Health Indicators: Ensuring Overall Well-Being

A surrogate mother's health is important not only for transfer preparation but also for the subsequent pregnancy. Common pre-transfer assessments include a complete blood count, blood type, blood glucose, liver and kidney function, thyroid function, and infectious disease screening.

Blood pressure, weight, and previous pregnancy history are also included in the overall assessment. Doctors evaluate each individual's health to determine whether further testing or lifestyle adjustments are needed. Maintaining a regular sleep schedule, eating a balanced diet, and engaging in moderate physical activity can help support good overall health.

5. Medication and Lifestyle Preparation Before Transfer

Before embryo transfer, the medical team typically develops an appropriate endometrial preparation plan. Since every woman's health condition is different, the timing and dosage of medication may also vary.

During this preparation period, it is important to complete examinations as scheduled, take medication on time according to the medical team's instructions, and maintain a consistent daily routine. If you experience any discomfort or have questions about your medication, communicate with your doctor promptly rather than adjusting your medication on your own.

Becoming a surrogate mother means taking part in a journey that requires careful preparation and professional support. Pre-transfer examinations are more than routine procedures. They provide the medical team with important information about your health and help them develop an individualized plan.

COSTA HEALTH pays attention to every stage of a surrogate mother's journey, from initial health assessments and medical preparation to embryo transfer and subsequent pregnancy, with a commitment to providing clear arrangements and ongoing support. If you are exploring Mexico surrogacy and considering becoming a surrogate mother, learning about your health and the examinations required before embryo transfer is a good place to start. Your participation can help a family achieve its dream of having a child, and you deserve comprehensive information, professional guidance, and responsible support.