Packaging of My Forever DNA's Twin Zygosity DNA Test Kit, featuring two smiling boys in striped shirts and glasses. The box promotes the kit as fast, affordable, and 100% accurate, ideal for determining if twins are identical or fraternal from home.
Features of My Forever DNA's Twin Zygosity Home DNA Test Kit: AABB accredited, 100% accurate, fast results in 1-3 days, suitable for all ages, and includes all fees and shipping.
Infographic showing fraternal vs. identical twins' development, from ovum split to placenta type, using My Forever DNA's Twin Zygosity Test.
Contents of My Forever DNA kit including sterile buccal swabs, DNA sample envelopes, step-by-step instructions, and a prepaid FedEx envelope for easy return. All lab fees included.
Infographic showing 6 easy steps for My Forever DNA testing: Order kit, receive in discreet package, fill form, collect DNA, mail samples via FedEx, and get fast results.
Overview of the My Forever DNA home testing process: Kit delivery, easy sample return without barcode registration, email updates on DNA sample processing, and direct email results.
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Twin Zygosity At-Home DNA Test Kit | My Forever DNA

$159.00

99.999% Accurate | 46 DNA (Genetic) Markers Tested | AllLab Fees & Shipping Included

FREE FedEx 2-Day Shipping (U.S.) & Ships within 1 Business Day | 100% Discreet Packaging

AT-HOME TWIN ZYGOSITY DNA TEST KIT

Accurately determine with 99.999% Accuracy whether two siblings/twins are identical (monozygotic) or fraternal (dizygotic) from the comfort of home. Our Twin Zygosity DNA Test Kit is simple, pain-free, and suitable for all ages, offering reliable insights into your twins' unique genetic relationship. Trust My Forever DNA for a clear understanding beyond appearances, giving you genuine answers about your twins' genetic heritage.

 
KEY FEATURES:
•  99.999% Accuracy
•  100% Confidential & Discreet
•  All Lab Fees & FedEx Shipping Included
•  24 DNA Genetic Markers Tested + Dual Processing Technology
•  Rated 5 out of 5 stars ★★★★★
  • NO HIDDEN COSTS: Purchase covers all lab fees & shipping for testing both siblings. Identical or Fraternal Twin DNA Test Kit components include step-by-step instructions, result notification form, FDA-approved buccal swabs, DNA sample envelopes, and a prepaid FedEx envelope, guaranteeing a seamless DNA collection experience.
  • PRESTIGIOUS US LAB: Partnering with an AABB Accredited US lab, which also undergoes yearly evaluations by the College of American Pathologists (CAP), assures top-notch accuracy.
  • UNMATCHED ACCURACY: We utilize cutting-edge technology, testing 24 DNA (Genetic) markers+Amelogenin. Dual Process technology ensures double verification, guaranteeing the utmost reliability and confidentiality, endorsed by our Chief Scientific Officer with over 20 years in the field.
  • FAST, SECURE RESULTS & EXEMPLARY SERVICE: Receive timely updates as soon as your samples arrive at our laboratory. Obtain secure and confidential results within 1-3 business days via email, US Mail, or opt for both to guarantee data safety. Experience superior customer service with our unwavering commitment to your satisfaction.
  • PERSONALIZED CUSTOMER SUPPORT: Benefit from our tailored service! A dedicated Customer Care Specialist will keep you updated and address any questions, reinforcing our commitment to transparency and your peace of mind.

What Is Twin Zygosity Testing?

Twin zygosity testing compares the complete DNA profiles of two siblings to reveal whether they are monozygotic (identical) or dizygotic (fraternal). Identical twins share 100% of their genetic markers, while fraternal twins share roughly 50%, the same as any non-twin siblings. Our analysis of 46 markers plus Amelogenin delivers a clear, science-backed determination.

Why It Matters Beyond Curiosity

Knowing your twins’ zygosity isn’t just a fun fact, it can guide medical decisions, such as selecting identical donors for stem cell or organ transplants. It also informs personalized health screening plans and deepens understanding of hereditary conditions. For families exploring twin dynamics, this test offers insights into shared traits and individual risk factors.