People with Down syndrome have an extra chromosome. Chromosomes are tiny parts of cells that carry the plans that make our bodies the way they are. People with Down syndrome have a problem with their chromosomes. The learning and medical problems in people with Down syndrome can be mild or severe. It can cause learning problems and medical problems affecting the heart, blood, digestive system, and other organs. If you do not want to repeat the test, we can offer a refund of £300 which covers the cost of the test.įAQs about testing for Down Syndrome What is Down syndrome?ĭown syndrome is a life-long condition that a person is born with. The Illumina Veriseq NIPT test is MORE accurate than the Harmony test, and whilst it is not 100% accurate, it is very useful for estimating the risk of the foetus having a chromosomal abnormality.Īround 2% of blood samples taken from a pregnant mother will not have enough genetic material from their foetus to analyse appropriately, and so the test will have to be repeated in these cases there is no charge for repeat testing in this case. How accurate is the Illumina veriseq NIPT test? Other sex chromosome conditions can also be predicted with the test. It can look at the sex of the foetus and for trisomy 21 (Down Syndrome), 18 (Edward’s syndrome) and 13 ( Patau’s syndrome). This genetic material is analysed to assess the chromosomes of the foetus. The Illumina VeriSeq test works in the same way as the Harmony test. How does the Illumina veriseq NIPT test work?
It is only done in women who are aged 18 to 48 years old. The pregnancy is not put at risk of miscarriage, or from other adverse outcomes that are associated with invasive testing procedures such as amniocentesis.
The testing is non-invasive: it involves taking a blood sample from the mother. This is a method used to determine the risk for the foetus being born with certain chromosomal abnormalities. The Illumina VeriSeq NIPT test replaces the harmony blood test, which looks for genetic material- circulating in the mother’s blood- that has come from their developing foetus. This option is not available for twin pregnancies. This option will be discussed at your appointment to determine whether requesting this is right for you. Similar to the Harmony test, the Illumina VeriSeq NIPT test with sex chromosome aneuploidy panel option can assess risk for XXX, XYY, XXYY, XXY (Klinefelter syndrome), and a missing X chromosome in a girl (Turner syndrome). Sex chromosome conditions occur when there is a missing, extra, or incomplete copy of the X or Y chromosomes. Ideally you should be registered with an obstetrician and mid-wife before having the Illumina VeriSeq (Harmony) test so that if it is needed you can have appropriate follow-up investigations if your test predicts a chromosomal abnormality. Results take 3-5 working days to come back.
Like the Harmony test, the blood samples for the Illumina VeriSeq test are processed in the genetics department of The Doctor’s laboratory (TDL) in London.
We cannot process pregnancies with a demised / vanished twin. Please note it can process singleton or twin pregnancies but we need to know if it’s a twin. It can only be taken after you have had an ultrasound to confirm the stage of the pregnancy (>10 weeks) and how many foetuses there are. This Illumina VeriSeq test is taken as a blood sample from the mother, in the same way as the Harmony test is. Screening for common chromosomal abnormalities can be from 10 weeks gestation. The Illumina VeriSeq (Harmony) blood test can be taken after 10 weeks gestation in singleton, twin, and egg-donor pregnancies.
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