But when conducted at the right time, NIPT is very rarely wrong, at about 99 percent accurate.

First Trimester Screening Tests You get it between 10 and 13 weeks of pregnancy. If the results are negative, you can choose to have more testing in your second trimester.

The NIPT test (short for noninvasive prenatal testing) is a blood test that’s available to all pregnant women beginning at 10 weeks of pregnancy. It screens for Down syndrome and some other chromosomal conditions, and it can tell you whether you’re having a boy or a girl.

“After seven weeks of gestation, the accuracy of fetal sex detection is very good using maternal blood,” says researcher Diana W. Bianchi, MD, a reproductive geneticist and executive director of the Mother-Infant Research Institute at Tufts Medical Center in Boston. At seven weeks, she found 95% accuracy.

This test can be done starting at 10 weeks of pregnancy. It takes about 1 week to get the results. A positive cell-free DNA test result should be followed by a diagnostic test with amniocentesis or CVS.

If you have a prenatal blood test (NIPT), you may be able to find out your baby’s sex as early as 11 weeks of pregnancy. Ultrasounds may reveal sex organs by 14 weeks, but they aren’t considered fully accurate until 18 weeks.

The earliest time we can assess the baby’s sex is at 12 weeks gestation/pregnancy: We can tell the sex of the baby at the 12 week scan by assessing the direction of the nub. This is something that can be identified on babies at this stage and if it points vertically then it is likely to be a boy.

2: No Y chromosome DNA detected: the pregnancy is likely to be female. Fetal sex will be confirmed at your 20 week anomaly scan. 3: Test Failure: e.g. insufficient DNA. In a few cases the lab may not be able to demonstrate the presence of fetal DNA.

A blood test to determine the gender of your baby can also indicate the possibility of genetic disorders. Check all the pros of prenatal blood testing in this article. What is an early sex blood test? Prenatal genetic tests may provide information to would-be parents about the chances of their fetus having genetic abnormalities.

Experts don’t recommend genetic testing only to determine sex, as it has certain associated risks. Amniocentesis is a type of genetic testing where the health care provider takes a small quantity of amniotic fluid from the uterus using a long, thin needle.

The researchers found that out of 672 cases, sex determination was possible 90 percent of the time, and the prediction was correct 87 percent of the time. While those percentages may seem pretty high, it’s not as easy as it sounds. There are a number of variables that can affect whether we can determine gender as early as 12 weeks.

It may take between one day and several weeks to get the results of the test. In chorionic villus sampling, a sample of placental tissue is taken to be analyzed for the presence of genetic disorders. CVS is usually done between pregnancy weeks 10 and 13. The analysis of the cells during prenatal diagnostic testing is done as follows: