non-invasive/invasive testing is available for complicated clinical cases

Non-invasive prenatal screening (NIPS)

How? Additional blood test

Screening with cell free fetal DNA can detect 99.9% of Down Syndrome cases prenatal. It can be performed on a blood sample of the mother, from 10 weeks’ gestation onwards. If you are interested in this, we can assist you as well. We are also able to refer patients that are interested in genetic counselling for a session in our practice with a registered genetic counsellor. Please feel free to visit Triscreen or Invitae should you have more questions.

Invasive prenatal testing

(Chorionic Villous Sampling/Amniocentesis)

How? Needle inserted into womb

In the event of a high-risk result with screening tests (combined first-trimester screening or cell free fetal DNA), parents have the option of undergoing diagnostic testing. A chorionic villus sampling is performed between 12 and 14 weeks, where a small placental biopsy is obtained for chromosomal testing. An amniocentesis is the alternative and can be performed after 16 weeks of gestation. Here a small volume of liquor is obtained for chromosomal testing.

If you are still unsure and would like to understand non-invasive prenatal testing better, feel free to watch this video.


To minimize exposure and adhere to COVID regulations, only the patient and spouse/partner will be allowed access to the practice. Your spouse/partner may not be replaced by any other person.

Please note that this may change last minute as protocols are dependent on the severity of the pandemic wave.