Tehotenské bruško

Trisomy and its risks

Random cell division abnormalities may occur during egg maturation and in the early phases of egg fertilisation. If these processes lead ot an extra copy of one of the chromosomes, which means a particular chromosome occurs in three rather than two instances, the condition is called trisomy.


There is a certain amount of foetal DNA in maternal blood already in the early stages of pregnancy. Using a special screening laboratory test, it is possible to isolate this foetal DNA and analyse it to determine the risk of foetal trisomy (three identical chromosomes).

Consult your doctor

TRISOMY test (or any of its variants) is designed to exclude the presence of trisomy 21 (Down syndrome), trisomy 18 (Edwards syndrome), and trisomy 13 (Patau syndrome) with a high degree of accuracy. If the mother-to-be wishes to know, the test can also determine the sex of her unborn baby.