MaterniT21 prenatal testing is a simple, noninvasive blood test that screens for chromosomal abnormalities during fetal development. Specifically, the test screens for conditions that are related to an extra chromosome, including Down Syndrome but also Turner Syndrome, Klinefelter Syndrome, Triple X Syndrome and others. Importantly, a positive test result is not conclusive, but a negative test result can help rule out the need for more invasive tests like amniocentesis. Women who are considered “high risk” for having a baby with a chromosomal abnormality may choose to undergo this test. This may include those who will be older than the age of 35 upon giving birth, those who have a family history of such abnormalities, and those who have received an abnormal screening or ultrasound finding prior to the test. MaterniT21 testing can also tell prospective parents whether they are expecting a boy or girl. Your health provider will thoroughly discuss with you whether this particular test is right for your baby and exactly what potential test results may yield.