Noninvasive prenatal testing (NIPT) around 10 weeks
The earliest way to learn your baby’s sex is through noninvasive prenatal testing, or NIPT. This blood test can be done as early as 10 weeks of pregnancy. It works by looking at small bits of fetal DNA that circulate in your blood.
NIPT was originally developed to screen for chromosomal conditions like Down syndrome, but it also identifies the sex of the baby with very high accuracy. The test is usually offered to people who have certain risk factors, though many practices offer it to anyone who wants it. It is one of several genetic screening options your provider can walk you through.
Insurance coverage for NIPT testing varies, so it is worth asking your provider what is included for your situation.
Anatomy ultrasound at 20 weeks
If you decide to skip NIPT, the next chance to find out your baby’s sex is the anatomy ultrasound. This scan is part of standard prenatal care and is usually done at 20 weeks of pregnancy. The main purpose of this ultrasound is to check your baby’s organs, growth, and overall development.
During the scan, the ultrasound technician can usually identify your baby’s sex by looking at the genitals. Accuracy depends a lot on how the baby is positioned. If your little one is curled up, has legs crossed, or has the umbilical cord in the way, it may be hard to get a clear view.
When the view is good, ultrasound is very accurate, but occasional mistakes can happen. That is why some parents choose to confirm with NIPT or wait to see for themselves at birth.
Other testing methods
A few additional tests can also identify sex, but they are not done specifically for that reason. Chorionic villus sampling (CVS) is done between 10 and 13 weeks, and amniocentesis is performed between 15 and 20 weeks. Both involve taking a small tissue or fluid sample and carry a small risk of complications. Providers usually recommend them only when there is a medical reason, like screening for a genetic condition.
At-home gender prediction kits
You may have seen at-home gender prediction tests advertised online. These often promise results as early as 6 to 8 weeks based on a urine or blood sample. The accuracy of these kits has not been well studied, and results can be unreliable. If you want a dependable answer this early, NIPT through your provider is the better choice.
Ready to find out together?
Whether you want to know your baby’s sex right away or save the surprise for delivery day, your prenatal team can guide you through the timing and testing options that fit your pregnancy. The providers at My Obgyne in San Tan Valley offer comprehensive pregnancy care, including diagnostic ultrasounds and counseling on prenatal testing. To schedule an appointment, call (480) 987-5500 or visit myobgyne.com to request a visit online.
