Explain an Amniocentesis

An amniocentesis is a process used to obtain a small sample of the amniotic fluid which surrounds the foetus to diagnose chromosomal disorders and open neural tube defects (ONTDs) like spina bifida. Testing is presented for other genetic defects and disorders rely on the family history and availability of laboratory testing at the time of the process.

An amniocentesis is usually offered to women among the 15th and 20th weeks of pregnancy who are at raised risk for chromosome abnormalities, such as women who are over 35 years of age at delivery, or those who have had an abnormal maternal serum screening test, pointing out an increased risk for a chromosomal abnormality or neural tube defect.