PGT-A testing is a standardized type of testing that looks at the chromosomes on a larger scale. Testing for aneuploidy aims to identify if embryos have the correct number of chromosomes (euploid). PGT-A can help optimize the IVF process and minimize pregnancy losses due to whole-chromosome abnormalities as the chance of an embryo having too many or too few chromosomes increases with the age of the parents. The process is faster, more rudimentary, and costs less per embryo. PGT-A does not catch single gene mutations (like PGT-M) or chromosomal rearrangements.
The genetics laboratory can use the same embryo biopsies to perform both PGT-M and PGT-A testing. Some genetics laboratories perform PGT-M and PGT-A simultaneously, while others allow for sequential testing.
