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An Introduction to NIPT (Non-Invasive Prenatal Testing)


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Non-invasive prenatal checking out (NIPT) is a complicated screening approach used to locate chromosomal abnormalities in a creating fetus. A blood pattern taken from the mum is processed and analyzed for the presence of chromosome issues within the child’s DNA. Unlike invasive checking out ways, equivalent to Amniocentesis and CVS, this latest strategy to genetic screening does now not pose any miscarriage menace and is risk free to the infant.

What Does an NIPT Test Involve?

During being pregnant, the mum’s blood incorporates a small quantity of genetic subject matter from her child, referred to as “circulating cell-free fetal DNA” or ccffDNA. In an NIPT take a look at, the mum’s blood pattern is processed to split her DNA from the ccffDNA. The child’s genome is then analyzed to locate abnormalities in sure chromosomes, which lead to prerequisites equivalent to Down Syndrome.

When Is an NIPT Test Performed?

Currently, NIPT assessments are advisable for girls with high-risk pregnancies. Risk components come with complicated maternal age, a circle of relatives historical past of chromosomal abnormalities, or instances wherein prenatal checking out (ultrasound, serum screening) has proven a menace for Down Syndrome or different genetic prerequisites.

The take a look at is lately validated and indicated for singleton pregnancies at 10 weeks gestation or older. Test effects are normally to be had in 10 days to two weeks.

Women all for taking an NIPT take a look at will have to talk about it with their obstetricians.

What Does an NIPT Test Screen For?

The screening analyzes the infant’s DNA to locate the chance for chromosomal prerequisites Trisomy 21 (Down Syndrome), Trisomy 18 (Edwards Syndrome), Trisomy 13 (Patau Syndrome) with a excessive stage of accuracy.

How Accurate is NIPT Testing?

There are a number of firms lately offering NIPT take a look at kits within the area that declare a excessive degree of precision. For detecting Down and Edwards Syndromes menace, the typical menace issue accuracy is 99 in keeping with cent. Accuracy charges for Trisomy 13 are between 80 and 92 in keeping with cent.

There are a couple of NIPT possible choices to be had available in the market, together with Prenatest from Lifecodexx, Germany which is the one CE-IVD licensed prenatal diagnostic take a look at which is validated with a European collaborative validation learn about.

It is essential to take into account that NIPT checking out determines most effective the chance degree for genetic abnormalities. The effects don’t definitively display if a toddler has a genetic abnormality or now not, however the chances are high that very excessive that if the take a look at effects display an issue, there may be one.

False certain charges, or the collection of assessments that point out a chromosome drawback when none is provide, are between 0.five and 1 in keeping with cent.

When a take a look at result’s certain, which means that it displays a excessive menace for a genetic situation, an Amniocentesis or CVS take a look at is normally advisable.

Also essential to remember is that the NIPT assessments lately available on the market most effective display screen for the precise chromosome abnormalities discussed right here. As this sort of screening turns into extra in style, a broader vary of genetic assessments will most likely develop into to be had.



Source via Karim Smaira

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