The prenatal testing revolution
This article is more than two years old.
Human reproduction is an extremely complex process and genetic mishaps are not uncommon.
Prior to fertilisation, 20-24% of all ova have an abnormal number of chromosomes, or aneuploidy.1, 2
Another 30% of embryos become aneuploid after fertilisation.2 Most of these early mutations will end in spontaneous miscarriage, but prenatal testing aims to provide early detection of aneuploidy should the pregnancy continue.