Pre-implantation Genetic Diagnosis (PGD) by Fluorescent in situ Hybridization is more commonly referred to as FISH. It is a method of genetic analysis that makes up one key step of the IVF process. Chromosomal abnormalities can be screened using special technology, allowing doctors to select embryos with a standard number of chromosomes.
Chromosomal abnormalities screening technology has been developed to screen for chromosomal abnormalities to select good embryos with normal chromosome number. The FISH process can be used to analyze 5-6 day old blastocyst cells, looking at five different pairs will be examined.