Pre-implantation Genetic Testing (PGT) at Bangkok Central Clinic

At Bangkok Central Clinic, our Pre-implantation Genetic Diagnosis (PGD) service, under the broader term Pre-implantation Genetic Testing (PGT), helps improve the chances of a healthy pregnancy by screening embryos for chromosomal abnormalities before implantation. This makes IVF genetic testing especially valuable for patients with a history of miscarriage, known genetic conditions, or repeated IVF failure.

PGT Process: Step by Step

๐ Ovarian Stimulation & Egg Retrieval: The IVF cycle begins with stimulating the ovaries to produce multiple eggs. Once the eggs are mature, they are surgically retrieved from the ovaries under ultrasound guidance.
๐ Fertilization: The retrieved eggs are fertilized with sperm in a laboratory, which can be done conventionally or using Intracytoplasmic Sperm Injection (ICSI).
๐ Embryo Culture: The fertilized eggs, now called embryos, are cultured in a lab for several days until they reach the blastocyst stage (days 5-6), a more developed form with about 100-200 cells.
๐ Embryo Biopsy: A few cells (3-10 cells) are carefully removed from the trophectoderm (the part of the embryo that will develop into the placenta) of each blastocyst.
๐ Genetic Analysis: The biopsied cells are sent to a specialized genetic laboratory for testing to detect any chromosomal or genetic abnormalities.
๐ Embryo Freezing: The embryos that are biopsied are then frozen for later use while the genetic analysis is completed.
๐ Results and Selection: After about 7-10 days, the lab provides the results, identifying which embryos are genetically healthy (euploid).
๐ Frozen Embryo Transfer (FET): A healthy, euploid embryo is thawed and transferred into the uterus during a subsequent cycle to initiate pregnancy.