The NACE PLUS test is recommended for all women who want to rule out the presence of chromosomal abnormalities in the foetus without putting their pregnancy at risk.

The test is especially suitable for women with a high risk of chromosomal abnormalities following 1st trimester screening (hormone analysis and ultrasound scan), or who have had a previous Down’s syndrome pregnancy. Nace is also recommended in the case of a twin pregnancy.


90% of patients who undergo an assisted reproduction treatment at IVI become pregnant.


IVI is a pioneer in the latest assisted reproduction technology in order to present the best results.


97% of our patients recommend IVI.
IVI provides personalised care and support during all stages of treatment.


We are not the most expensive choice. We offer the most treatment options in order to achieve the best results.


The Nace Plus and Nace tests use advanced technology to compare foetal and maternal DNA in order to detect trisomies with excellent precision and reliability.

Nace Plus and Nace can detect 99.9% of foetuses with Down’s syndrome. It also detects other common chromosomal anomalies with a high degree of reliability.

Nace Plus and Nace


During pregnancy, a baby’s DNA mixes with its mother’s blood flow. Huge advances in the field of genetics make it possible for us to detect this foetal DNA in the mother’s blood for the first time and to access genetic information regarding the baby’s chromosomes.

Human beings have 23 pairs of chromosomes with a total of 46 (two copies of each pair). The first 22 pairs are numbered from 1 to 22. The last pair determines sex. Girls have two X chromosomes and boys have one X chromosome and one Y chromosome. Health and development problems arise when there is a missing or an extra chromosome.


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