Down syndrome occurs because of extra genes from the 21st chromosome. Diagnostic Tests Down syndrome incidents are seen in about 1 in 1,000 births in the USA. The main thing to know is that there is no association between Down syndrome and culture, geographic region, ethnic group, or socioeconomic status.
Generally, as a woman reaches the age of 35 and beyond that, the chance of having a baby with Down syndrome becomes more and more.
Diagnostic Tests such as Amniocentesis and chorionic villus sampling (CVS) are primary procedures for finding out Down syndrome.
This diagnostic test detects most chromosomal disorders, such as Down syndrome, with a high degree of accuracy. For neural tube defects, such as spina bifida, this testing is also very much preferred.
- Chorionic Villus Sampling (CVS)
Like amniocentesis, CVS is used most commonly to identify chromosomal problems such as Down syndrome. The main benefit is that CVS is done much earlier in pregnancy, at 10 to 12 weeks.
The advantage of CVS over amniocentesis is that you will get results much earlier in pregnancy that is by the end of the third month. The main drawback is that spinal cord defects cannot be detected.
If a diagnostic test finds a genetic abnormality, then it is important to discuss with DNA testing experts familiar with
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