What is genetic screening test? Why do I need to do it?

Genetic screening tests can determine if your fetus has a genetic disorder. Screening tests are usually done around 10-13 weeks of gestation. In addition, genetic screening tests can also be done in the second trimester. The information from the results of the screening tests, combined with other risk factors such as maternal age and a history of hereditary disease, is used to calculate the likelihood that a fetus will be born with a genetic disorder, such as Down syndrome.