Ensure that everything is fine with your baby.
PRENASCAN is a test assessing the risk of fetal genetic abnormalities from a blood sample of the pregnant woman.
It measures the quantity and composition of fetal DNA circulating in the mother's bloodstream.

Benefits of PRENASCAN Examination

  • Safe

    Non-Invasive test with no risk of spontaneous miscarriage.

  • Accurate

    It detects a wide range of genetic abnormalities, including rare ones. It very accurately determines the sex of the fetus.

  • Easy

    Only 10 ml of blood is required for the examination. Possible to perform even in a twin pregnancy.

  • Result Certainty

    To repeat the test is necessary in less than 1.2% of cases.

  • Completely Conducted in the Czech Republic

    The test is performed and evaluated exclusively in our Czech laboratories at GNTlabs by GENNET.

  • Certified Procedure

    Test certified according to the European In-Vitro Diagnostic Directive CE-IVD (and in accordance with IVDR).

  • Automated Processes

    High degree of automation increases accuracy of analysis and reduces risk of failure.

  • Validated result

    Test is validated for the detection of rare chromosomal anomalies, accounting for up to 25% of findings.

What risks can be detected?

  • Significant changes in the number or composition of chromosomes
  • Down syndrome (Trisomy 21), Edwards syndrome (Trisomy 18), Patau syndrome (Trisomy 13)
  • Trisomy of chromosomes 9, 16, and 22 increasing the risk of spontaneous miscarriage
  • Changes in the number of X and Y chromosomes determining the gender of the fetus
  • Turner syndrome (monosomy X), Klinefelter syndrome (trisomy XXY), Jacob syndrome (XYY)
  • Microdeletion and microduplication syndromes of larger extent (losses and duplications of chromosome segments above 7Mb)

When should I undergo the examination?

  • At higher maternal age (over 35 years)
  • When there is an increased risk of chromosomal trisomy detected during biochemical screening without ultrasound findings
  • When there is an atypical screening result with borderline risk
  • During pregnancy following assisted reproduction
  • If there are concerns about the fate of the fetus

The Risk of Down Syndrome Occurrence
Based on Maternal Age

The Risk of Down Syndrome OccurrenceBased on Maternal Age The Risk of Down Syndrome OccurrenceBased on Maternal Age


PRENASCAN is not recommended as the first-choice test when ultrasound detects fetal development anomalies or fetal defects, or in cases of a high risk of chromosomal abnormalities. In these instances, we recommend fetal examination using invasive prenatal diagnostic methods such as chorionic villus sampling (CVS) or amniocentesis (AMC).

The risk of trisomy increases with the mother's age. Currently, there is neither effective prevention nor targeted treatment for these chromosomal abnormalities, and the life prognosis for those affected is often unfavourable.

How is the examination conducted?

  • The test is performed from the 10th week of pregnancy
  • We collect a blood sample from the pregnant woman, which is then examined in our laboratory
  • The test results are available within 7 business days

Principle of the Test

During pregnancy, free fetal DNA enters the mother's bloodstream, creating a mixture of maternal and fetal DNA fragments circulating in the maternal circulation. The method of massive parallel sequencing allows us to assign each of the millions of DNA fragments in the mother's plasma to the chromosome it originates from, thus identifying an excess or deficiency of DNA from a specific chromosome in the fetus.

In case of a positive result, the finding must be confirmed by invasive fetal examination – genetic testing of fetal tissue obtained through chorionic villus sampling (CVS) or amniocentesis (AMC).

Principle of the Test
Pro maminku

Pro maminku i děťátko

In addition to the collection set, we also packed a practical gift for future mothers in the PRENASCAN box, which will make not only her happy, but also the baby in her belly. Verra Complex Fertility & Pregnancy is a premium food supplement to support natural conception and to receive the necessary nutrients throughout pregnancy. Even before becoming pregnant, a woman should take care to supplement essential nutrients in order to prepare the organism for the conception of the baby, and subsequently for its proper development. Verra has compiled this product according to clinical studies, EFSA (European Food Safety Authority) values ​​and under the auspices of the National Institute of Health. The vitamins and minerals contained in the product are in active or easily absorbable forms and in sufficient quantities. Thus, they maximally cover the micronutrient needs of women and thus support natural conception and subsequently the development of the baby. At the same time, the product does not contain any unnecessary additives that would burden the organism of women or babies. Verra is also suitable for allergy sufferers (soy, gluten) and vegans.

How much does PRENASCAN cost?

Health insurance companies may contribute a significant amount to pregnancy examinations.

Don't forget to check with your insurance provider!

Examination Price
12,500 CZK

PRENASCAN Package + First-Trimester Congenital Defect Screening = Discount of 1500 CZK!

Take advantage of this unique opportunity to secure the PRENASCAN genetic test at a discounted price!

If you undergo first-trimester screening at our centre, you can get the PRENASCAN test for 11,000 CZK.


Thanks to the comprehensiveness of our services, we provide all care in one place.

  • We have the most advanced technical equipment. Our experts are thus capable of precisely determining the diagnosis and the subsequent treatment.
  • The examinations we provide will ensure you receive the maximum information about your unborn child.
  • We specialise in both non-invasive methods (ultrasound, blood tests, Prenascan) and invasive examination techniques, where we genetically examine fetal tissues most commonly obtained through amniocentesis (AMC) or chorionic villus sampling (CVS).
  • You're not alone in this. Throughout the process, you will be accompanied by our team of experts whom you can turn to with any questions.
  • We always do our best for your satisfaction.

How to book for the PRENASCAN test?

For more information and bookings, please contact:

Mgr. Jana Vávrová

+420 226 231 690

Mgr. Veronika Vokálová

+420 242 456 816

To make a booking, you can use this contact form or call us on the above numbers.

Book Now

Contact Us

GENNET Letná, Praha 7
Kostelní 9, 170 00

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