Genetic Testing
A screening test can be done to identify people at high risk for Downs Syndrome, cystic fibrosis, open neural tube defects, and other chromosomal problems.
Down syndrome is caused by an extra chromosome #21. This extra chromosome causes mental and physical abnormalities. About 1 in 800 babies is born with Down syndrome. The risk of having a baby increases with age, but can occur at any time and without a family history of genetic problems.
Cystic fibrosis causes lung and digestion problems, which can lead to a shorter life span. Approximately 1 in 20 Caucasians carry the gene that causes cystic fibrosis.
Trisomy 18 is caused by an extra chromosome, and causes sever mental and physical problems. Only 1 out of 10 babies will live for a year.
Open neural tube defects can lead to paralysis and other mental problems. These occur in 1 out of 1000 live births, but are prevented by taking Folate, a B vitamin, BEFORE the pregnancy. This defect is not age related.
Not all diseases or birth defects are detected by this test.