Non Invasive pre natal test (NIPT)

The nest screen test is a simple blood test that screens for the most common chromosomal conditions that can affect your baby’s health at 10 weeks.

nest offers parents-to-be a new choice to obtain important information about the health of their developing baby, simply, accurately and in the first trimester (at 10 weeks), with little or no risk to their pregnancy.

The test is performed in Australia and all patients have access to experienced prenatal genetic counsellors at no extra cost.

A sample of your blood is drawn and the genetic material (DNA) from you and your baby is tested.

The nest screening takes a deeper approach to the science, using an advanced technology called ‘Massively Parallel Sequencing’ to analyse millions of DNA fragments per sample and accurately count the number of chromosomes present. It then uses a special SAFeR™ calculation method to determine if your baby has too many or too few copies of these chromosomes.

Maternal blood sample and microscopic view of DNA



Chromosomes normally come in pairs. Most individuals usually have 23 pairs of chromosomes. nest looks for too few or too many copies of chromosomes. Missing or extra copies of chromosomes can be associated with intellectual or physical disabilities, with different levels of severity. The most commonly seen chromosomal conditions listed below can be accurately detected with nest.

Trisomy 21 Down syndrome

Carrying an extra copy of chromosome 21 causes Down syndrome. People born with Down syndrome can have health and development challenges, some level of intellectual disability and have some characteristic physical features.

Down Syndrome is the most common chromosome disorder affecting approximately one in every 660 pregnancies in Australia.

Trisomy 18 Edwards syndrome

Carrying an extra copy of chromosome 18 causes Edwards syndrome.

High rate of miscarriage is often associated with Edwards syndrome. Additional babies born with the condition have a significantly shortened life expectancy, suffer heart abnormalities, kidney malformations and developmental delays.

This is the second most common chromosome disorder affecting approximately one in every 1,100 pregnancies in Australia.

Trisomy 13 Patau syndrome

Carrying an extra copy of chromosome 13 causes Patau syndrome.

Again, with trisomy 13 high rate of miscarriage is often associated. Babies born with Patau syndrome rarely survive beyond the first year of life. They often suffer eye defects and difficulties with feeding and breathing, heart and brain problems.

Approximately one in 3,000 pregnancies in Australia are affected by Patau syndrome.

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