Prenatal screening tests help you in identifying chromosome disorders or birth defects. When you visit the doctor for the checkups, first you have to go through the various prenatal screening tests which can identify some particular disorders.
The main first-trimester screening tests are mentioned below:
First-trimester screening tests are done between the 11th and 13th weeks of pregnancy. At this time, the doctor checks for certain birth defects or chromosomal disorders such as Down syndrome. The 2 main screening tests of the first trimester:
- Two maternal serum test
In this screening test, the doctor measures 2 substances found in the blood of a pregnant woman. Pregnancy-associated plasma protein screening and human chorionic gonadotropin are the two screening tests, help in checking the levels of substances which is related to chromosome problems.
- Ultrasound test
The ultrasound test is used for Fetal Nuchal Translucency screening, which checks the extra fluid or thickening at the back of the fetal neck.
- Cell-free fetal DNA screening
The cell-free fetal DNA (cffDNA) is released by the placenta and circulates in a pregnant woman’s blood. This DNA reflects the genetic makeup of the fetus. This test which is also known as the Noninvasive prenatal screening (NIPS) can identify chromosome disorders. Down syndrome is the most common disorder, detected by cffDNA testing.
You can contact Face IT DNA for Noninvasive prenatal DNA testing Texas and you will get proper assistance in choosing a suitable screening test. Here, also get many other DNA tests such as paternity testing, forensics, ancestry DNA testing, Immigrations, and many more.