Discover your baby’s traits before birth

Will your baby have brown eyes, blond curls, or a sweet tooth just like you? Find out as early as 10 weeks with BabyPeek, the first and only genetic test of its kind.

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BabyPeek is available exclusively as an add-on to UNITY Complete.
BabyPeek is not a medical test.
Eye color
Red hair
Curly hair
Light or dark hair
Hair thickness
Bitter taste
Asparagus odor
Sweet taste
Sweet vs. salty

Unlock 12 unique traits beyond gender

BabyPeek uses advanced technology to analyze well-known genetic factors that determine what traits a baby will most likely have. Much like a weather report, results are calculated as probabilities.

Already a UNITY Patient?

If you’re already a UNITY patient, BabyPeek is available as a add-on from the UNITY portal to get exclusive insights into your baby's traits before birth.

How BabyPeek works

BabyPeek is available exclusively as an add-on to UNITY Complete, a prenatal test that screens for genetic disorders.

Request Access

Ask your doctor to request a UNITY test kit, or confirm your doctor already offers UNITY

As early as 10 weeks, get mom's blood drawn for UNITY Complete

7-10 days later, get UNITY results in your patient portal, including baby’s gender and fetal risk
Instantly unlock 12 bonus traits with BabyPeek in the patient portal

What BabyPeek parents say

“I really love it. I think it’s awesome. As a pregnant person, I’m living in anticipation every day... Now, I can imagine... It definitely creates the connection and bond with my baby.”


BabyPeek Parent

“BabyPeek is really fun and interesting. I loved that we could see how likely our baby girl is to have freckles and red hair like me, and thinner hair and early teething like her dad... It will be fun to see how accurate the eye color is [because] my family has such a mix.”

Real BabyPeek Parent

“The results are perfect for gender reveal parties... Very exciting [way] to have a closer bond with your baby. Also adds fun when you aren’t feeling well in the first trimester.”


BabyPeek Parent

“I 100% believe the baby won’t like cliantro because the father can’t stand it! That was so neat to see! All in all the information gathered seems spot on and I’m super curious now to see if it matches up.”

Real BabyPeek Parent

“This is such a fun sneak peek! Loved seeing all the different traits my baby may have. It is interesting to learn how these traits are determined as well.”

Real BabyPeek Parent

“BabyPeek is so fun! I love the images and percentages!”

Real BabyPeek Parent

Powered by cutting-edge technology

BabyPeek is the only report that reveals your baby's traits before birth, enabled by BillionToOne's pioneering genetic testing technology. After you complete your UNITY screen, a medical prenatal test, we’ll use the same blood sample to explore your baby’s genetic traits—hidden in the DNA fragments in your blood.

Baby sleeping on mother's arm

Frequently asked questions

You can get a UNITY Complete screen as early as 10 weeks into your pregnancy, which gives you access to BabyPeek—all with just one maternal blood sample.

Your UNITY result is typically available 7-10 days after we receive your sample. Then, you can unlock BabyPeek directly in the patient portal.

No, BabyPeek is available only as an add-on to UNITY Complete. After receiving your UNITY results, you will be able to purchase BabyPeek and unlock results directly in the patient portal.

BabyPeek is available exclusively as an add-on to UNITY Complete (more on UNITY below). The UNITY Complete test is covered by insurance, and we accept ALL insurances, including Medicaid. BabyPeek is an optional add-on to UNITY Complete, and is $99 if you choose to unlock those results within the portal. Pricing promotions are often available, please speak with our team to learn more. We recognize that every patient's insurance and financial situation is unique. We have a dedicated patient services team to support patient needs, including payment plans or financial assistance for those who qualify. If you have any questions or concerns with costs, please email us at or call us at 650-460-2551.

UNITY Complete is a non-invasive prenatal test (NIPT) that looks at baby’s DNA for recessive and chromosomal conditions. It is recommended to be offered for all pregnancies. It also unlocks optional insight into 12 unique traits about your baby through the BabyPeek add-on. You can choose to unlock these additional results in the patient portal once your UNITY Complete screen has been processed. 

BabyPeek results are a prediction of what traits your baby is most likely to have. They do not mean that your baby will have these traits with absolute certainty.

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