Test Eligibility Calculator

SneakPeek Early Gender Test can be used any time starting at 6 weeks into pregnancy until birth. Use the calculator below to see if you’re eligible!

Check if you're at 6 weeks
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Am I eligible for the SneakPeek Early Gender Test?

Are you ready to discover whether you’re having a boy or a girl? SneakPeek makes learning the sex of your baby easier and faster than ever with our clinically proven, over 99% accurate test. With the SneakPeek test, you can find out the sex of your baby as early as 6 weeks. No clinic, no waiting rooms—just pure joy, fast and from the comfort of home.

The SneakPeek Early Gender Test eligibility calculator uses your last menstrual period or your due date to confirm that you’re testing at the right time—with this information, the calculator will ensure you’re at the optimal stage in your pregnancy for accurate results. This simple tool takes the guesswork out of timing, so you can feel confident about learning the sex of your baby and start planning for your boy or girl with certainty.

SneakPeek offers the only patented device for baby sex tests, using a simple, fast, and virtually pain-free method to detect male DNA in your blood. The test works by identifying Y chromosomes—if they’re present, you’re having a boy; if not, it’s a girl. It’s as simple as that!

We know how exciting (and sometimes nerve-wracking) pregnancy can be, especially when it comes to planning for your little one. That’s why we offer a solution that lets you bond with your baby long before the 20-week ultrasound, giving you the opportunity to start making those early plans with confidence. Know early, plan early, love early.

Gender Test Eligibility FAQs

  • How is the sex of a baby determined?
    Biologically, a baby’s sex is determined at conception, when either an X or Y chromosome from the sperm pairs with the egg’s X chromosome. SneakPeek’s early gender test analyzes DNA in the parents’ blood to detect the presence or absence of Y chromosomes, offering accurate results as early as 6 weeks.

    Source:
    News Medical. How is the Sex of a Fetus Determined? https://www.news-medical.net/health/How-is-the-Sex-of-a-Fetus-Determined.aspx
  • What is gestational age?
    Gestational age is a measure of how far along a pregnancy is, typically calculated from the first day of the last menstrual period (LMP). It tracks the number of weeks and days that have passed, helping doctors monitor the baby's growth, plan necessary tests, and estimate the due date. Understanding gestational age ensures that both the mother and baby receive the proper care at the right stages of pregnancy​.

    Source:
    Variety Care. What Is Gestational Age and How Do You Calculate It? https://varietycare.org/blog/blog-post/variety-care-blog/2025/01/21/what-is-gestational-age-and-how-do-you-calculate-it
  • Does the gender test work for twins?
    If you’re carrying double, you might be wondering how to test the gender of twins. The SneakPeek test detects male DNA in the fetal DNA found in the parents’ blood. This means that for identical twins, if male DNA is present, both babies are boys. If no male DNA is detected, both babies are girls. For fraternal twins, the presence of male DNA means at least one baby is a boy, but it can't identify the sex of the second baby.