Sneak Peek® Gender Blood Test

Learn Your Baby’s Gender Using Your DNA by 7 Weeks of Pregnancy99.9% accuracy—Next Day results!

Mommy and Me’s Gender Blood Test

For a less-intensive gender determination process, come by Mommy and Me for a convenient DNA test. See, the clinical 7+ week gender blood test utilizes the shared fetal DNA circulating inside the mother’s bloodstream to naturally examine the growing fetus’ DNA. Our PCR technology is built to detect the presence or absence of the Y chromosome—the genetic signifier of gender—to safely ascertain your baby’s gender at just 7 weeks into pregnancy.

If the blood sample indicates presence of the Y chromosome, it’s a boy!

Lack of a Y chromosome? You have a baby girl!

Mommy And Me 4D Ultrasound is the best for a sneak peek of gender. It is the best 3D 4D ultrasound san diego.

Mommy and Me uses the leading non-invasive prenatal testing (NIPT) equipment from Gateway Genomics’ Sneakpeak® Early Gender Test.

Clinical Accuracy Studies

Multicenter blinded study conducted at four ultrasound clinics in 2015

The purpose of this study was to assess the clinical performance of SneakPeek® Early Gender Test (Gateway Genomics) for noninvasive prenatal testing (NIPT) of fetal sex. A multicenter-blinded study was conducted at four ultrasound clinics with maternal blood samples collected from pregnant women between 9 and 35 weeks of gestation. Circulating cell-free DNA was isolated from a micro-volume of maternal plasma and real-time quantitative PCR was performed to detect fetal DNA using a multi-copy sequence on the Y chromosome. An autosomal control gene was used to measure total cell-free DNA (maternal and fetal cfDNA). Sixty maternal plasma samples were tested twice, on different days, to assess the precision of SneakPeek.


  • Cell-free DNA was detected in all maternal blood samples.
  • Y-chromosome DNA was detected in all samples from women carrying a male fetus.
  • SneakPeek correctly identified fetal sex in all samples.
  • Assay precision data showed minimal variation and high reproducibility of results.
  • Fetal sex for all samples was unknown prior to genetic testing and was confirmed via sonographic evaluation at the conclusion of the study. SneakPeek accuracy, sensitivity and specificity were each 100% for fetal sex identification. This blinded study showed that SneakPeek Early Gender Test is highly accurate for fetal sex determination in early pregnancy.

Find Your Baby’s Gender

During your ultrasound appointment, we can determine your baby’s gender. Get a head start planning for your offspring—don’t wait months longer to start shopping for baby clothes, a crib, and all the other things new parents need to.

4.9/5 stars on Google—with over 750 reviews!

Mommy and Me is San Diego’s #1 rated 4D Ultrasound Center, with happy customers in National City, Chula Vista, and La Mesa.

Get More at Mommy and Me

Over 13,000 Baby Genders Determined Since 2013

Come in for a same day appointment with our licensed, highly qualified sonographers. Our trained staff has a combined experience of over 13,000 ultrasounds.

Call us at (619) 684-5045, or come in for a same-day appointment!