All Lab Fees Included | No Kit Activation. No Online Portal. Real Human Support.
All Lab Fees Included | No Kit Activation. No Online Portal. Real Human Support.
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Twin Zygosity Home DNA Test Kit | Identical or Fraternal Twins

$159.00

About This At-Home Twin Zygosity DNA Test Kit

The My Forever DNA® Twin Zygosity DNA Test helps determine whether twins are identical or fraternal with simple, private at-home collection. Get answers for newborns, children, teens, or adults with no doctor visit, online portal, barcode activation, or complicated registration.

  • Determines whether twins are identical or fraternal
  • 99.999%+ Accurate, tested in a premier U.S. AABB-accredited and CAP-certified laboratory
  • 24 DNA Genetic Markers tested for twin zygosity analysis
  • Suitable for twins of any age, including newborns, children, teens, and adults
  • Simple, pain-free cheek swab collection from home
  • Discreet DNA sample options available when cheek swabs are not possible
  • All Lab Fees Included with no surprise processing fees after purchase
  • Fast 1-3 business day results after your DNA samples and completed Result Notification Form are received by the lab and placed into processing
  • Secure PDF results delivered by email
  • Real human support from My Forever DNA® from start to finish

What Is a Twin Zygosity DNA Test?

A twin zygosity DNA test compares the DNA profiles of twins to determine whether they share the same genetic profile. Matching profiles support that the twins are identical twins; non-matching profiles support that they are fraternal twins.

Families choose zygosity testing for personal knowledge, family history, medical background awareness, or peace of mind. Appearance alone cannot always confirm twin type.

Simple, Private DNA Collection From Home

Collection is quick, easy, and non-invasive. Each kit includes cheek swabs and instructions. No needles, blood draws, doctor visits, or complicated registration required.

Choose the Twin Zygosity Testing Option That Fits Your Family

Standard Single-Location Twin Zygosity Test

If both twins can collect samples from the same home, our Standard Twin Zygosity DNA Test Kit is the best option.

Multiple Location Twin Zygosity Test

If twins live in different homes, cities, or states, our Multiple Location Twin Zygosity DNA Test Kit allows two kits to ship to separate addresses.

Discreet or Alternative DNA Sample Options

If cheek swabs are not possible, My Forever DNA® offers Discreet DNA Testing using approved alternative samples, such as toothbrushes, hair with root, nail clippings, or earwax.

Premier Accreditations & Gold Standard Accuracy

Every sample is processed by a trusted U.S.-based laboratory with AABB accreditation and CAP certification. Each test includes 24 DNA genetic markers plus Amelogenin gender identification for clear, reliable results.

Learn more on our About Our Laboratory page.

Why Choose My Forever DNA®?

Since 2015, My Forever DNA® has made at-home DNA testing simple, private, and supported. No portals, activation codes, or impersonal systems—just real guidance from order to results.

  • No online portal required
  • No barcode activation or kit registration
  • No confusing automated process
  • Secure PDF results delivered by email
  • Discreet testing options available
  • Real support from real people

Get Clear Answers About Your Twins

Whether testing newborn twins, adult twins, or twins in different locations, this kit gives families a simple, reliable way to learn whether twins are identical or fraternal with trusted lab standards and human support.

Clarity, Care & Transparency

For informational use only. This product is not a medical device and is not intended to diagnose, treat, prevent, or assess any medical condition.

This test is not intended for legal or court-admissible purposes unless a legal chain-of-custody test is purchased. Learn more about Legal DNA Testing options.

Learn more about privacy, responsible advertising, and customer trust in our Trust & Transparency Statement.

1-3 Day Results After Samples Are Received

Your DNA test results are completed and emailed within 1-3 business days after all required DNA samples and the completed Result Notification Form have been received, accepted by the laboratory, and placed into processing.

In some cases, results may be completed even sooner.

What to Expect Once Samples Are Received

  • Personal Confirmation From Your Dedicated DNA Specialist: Once your DNA samples and completed Result Notification Form have been received and placed into processing, your dedicated DNA Specialist will personally confirm your case status.
  • Clear Result Turnaround Timeline: You will receive a clear timeline so you know when to expect your confidential DNA test results.
  • Direct Access to a Real Person: If you have questions or need clarification, you can speak with a real My Forever DNA® Specialist instead of relying on an automated portal.
  • Secure Results Delivered by Email: Your completed results are sent as a secure, full-color PDF directly to the authorized recipient by email.
  • No Portal, No Barcode Activation, No Impersonal Process: There is no online portal to navigate, no barcode activation required, and no confusing automated system.

Important Turnaround Information

Results are processed and emailed Monday through Friday only. Weekends and holidays are not included in the 1-3 business day result turnaround time.

Looking for Your Return Tracking Number?

Please reference the tracking email sent when your kit was shipped. This email includes your prepaid return FedEx tracking number, which you can use to monitor when your DNA samples have been delivered back to the laboratory.

The Human Advantage Behind Every Accurate DNA Result

We understand how personal, emotional, and important DNA testing can be. That is why My Forever DNA® does things differently by creating a more private, guided, and human DNA testing experience from start to finish.

You should not have to receive life-changing DNA test results through an impersonal portal with no clear way to speak to a real person.

Once your DNA samples arrive at the laboratory, your case is assigned to a Dedicated DNA Specialist who helps guide the process and keep you informed.

  • Direct phone and email communication with a real person
  • Personal confirmation when your DNA samples are received and placed into processing
  • Clear timelines and expectations so you know what happens next
  • Support before, during, and after results if you have questions or need clarification
  • No barcode registration, no kit activation, and no confusing online portal to navigate

My Forever DNA® provides a private, guided DNA testing experience backed by real human support when family answers matter most.

Your DNA Has a Story. We Keep It Yours.

Your DNA is personal - and your answers should be, too. Every My Forever DNA® at-home DNA test is designed with privacy, discretion, and real human support from start to finish.

Your kit arrives in a plain FedEx envelope with no company name, DNA testing language, or identifying details on the outside.

Unlike many DNA testing companies, we do not require online account setup, barcode activation, kit registration, confusing portals, or passwords to remember.

What Makes My Forever DNA Different

  • No consumer DNA profile created or stored in a genealogy database
  • No genealogy database participation or genetic matching platform
  • No DNA data sharing, selling, or third-party access
  • No uploading to ancestry, law enforcement, government, or consumer DNA databases
  • No kit activation, barcode registration, online portal, or account setup
  • Discreet shipping in a plain FedEx envelope
  • Discreet billing - your purchase appears as MFD on your statement

Real Humans. Real Privacy.

A dedicated My Forever DNA® Specialist is available to help guide you through the process, answer questions, and make your experience feel personal, private, and supported - never confusing, automated, or overwhelming.

Private Answers. Discreet Testing. Real Human Support.

View Our Privacy Policy

Everything You Need for a Simple, Private At-Home Twin DNA Testing Experience

The My Forever DNA® Twin Zygosity DNA Test Kit includes everything needed to determine whether twins are identical or fraternal from the comfort of home - with all lab fees included, FedEx® shipping both ways, easy cheek swab collection, and private results by email.

Inside your kit, you’ll receive:

All laboratory testing fees included - no surprise processing fees after purchase.

FedEx® shipping both ways included - your kit ships to you, and a prepaid return envelope is included for fast, trackable sample delivery to the lab.

Sterile cheek swabs for easy, painless DNA sample collection.

DNA sample envelopes for each twin to keep each participant’s sample properly separated.

Step-by-step collection instructions for simple at-home use.

Result notification form so your confidential results can be delivered quickly and securely by email.

Direct contact information for your assigned DNA Specialist for real human support from start to finish.

Your kit ships within 1 business day, with overnight delivery available at checkout.

No hidden fees. No confusing portal. No barcode activation. Just clear twin DNA answers with trusted My Forever DNA® support.

Free 2 Day Shipping

Lab Fees Included

Give Us a Call

402-800-7161

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Based in the USA

7004 Maple St., Omaha, NE 68104