![]() ![]() Īt the request of the parents, the gender of the child can also be determined in the Harmony Test , but this only applies to singleton and twin pregnancies. According to the Genetic Engineering Act, the laboratory carrying out the test may only inform the doctor of the gender from the twelfth week of pregnancy. If the test is carried out earlier, the result will be submitted by the laboratory at a later date. Such an anomaly occurs, for example, in Turner syndrome and Klinefelter syndrome : In Turner syndrome, which only affects girls, the cells have only one (instead of two) X chromosomes. Klinefelter syndrome only occurs in boys: those affected have at least one extra X chromosome. The Harmony Test also detects abnormalities in the normal number of sex chromosomes. non-invasive). For the test, the doctor takes a blood sample from the pregnant woman. This is examined in the laboratory for traces of the child’s genetic material (DNA). An analysis of these child DNA snippets shows with a high degree of probability whether the offspring has one of the following three trisomies : Both of these procedures carry around a one in 100 risk of causing a miscarriage.The Harmony test is a non-invasive prenatal test (NIPT) : It can be used to detect chromosomal abnormalities in the unborn child during pregnancy, without any intervention on the expectant mother or the child itself (i.e. This reduction in the false positive rate reduces the number of women being offered invasive testing, using chorionic villus sampling (CVS) or amniocentesis. The Harmony test has a false positive rate of 0.1%. What are the other screening tests available and why is the Harmony test better?Ĭurrent screening tests(Nuchal Translucency scan)have a false positive rate (that is, the results suggest a problem when the baby is in fact healthy) of around 4%. For this reason, a procedure such as an amniocentesis or chorionic villus sampling (CVS) may be recommended following a high probability Harmony result. What if I have a high probability test result?Ī high probability result does not mean your baby definitely has a chromosomal abnormality although it is highly likely. If the test result shows a high probability result, then the probability that your baby has a chromosomal abnormality is greater than 99%. If the test result shows a low probability result for a chromosomal abnormality, then your baby will have a probability of less than 1 in 10,000. The Harmony test is now one of the most accurate and non-invasive tests available to predict the chance of your baby having a chromosomal abnormality. In the event of a high probability result, we will provide you with a referral letter to a Fetal Medicine Unit in an EPAU in order to discuss your next steps. If it reports low probability, no further follow up required. The results will come back as 0.01% probability which is your low chance result or 99.9% which is your increased probability result. Once you receive the email/results you can always contact us if there is anything you need to discuss. You will be contacted by a member of our team who will explain the test results to you. Your results will be reported to you within 8 working days of your appointment. You may require an ultrasound scan to confirm gestational age, if you have not already had an early pregnancy scan completed. You will then be asked to complete a consent form. You can have the Harmony Test performed from 10 weeks gestation on How Is The Test Performed & How Long Will It Take To Get The Results?īefore the blood test is taken, the sonographer will discuss the test with you to answer any questions you may have. When can I have the Harmony Test performed ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |