Lots of IVF clinic are pushing PGS
( preimplantation genetic screening) testing. They claim that it can help to improve pregnancy rates by reducing the chances of transferring chromosomally abnormal ( aneuploid) embryos.
This seems logical, but as this article
points out , PGS testing can be inaccurate. The lab reports are not always reliable, which means we may be throwing away embryos which could have become completely healthy babies
. This means PGS may actually reduce the chances of a pregnancy !