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Twin DNA Testing

Twin Zygosity DNA Testing: The Only Way to Know for Sure

All pairs of twins are either identical (monozygotic) or fraternal (dizygotic). Contrary to what you may have thought, you usually can't tell the difference just by looking at twins, especially when they're younger. Even some traditional indicators of zygosity, like the number of placentas present at birth, are often misinterpreted or inaccurate. The only surefire way to know zygosity is by comparing the twins' DNA.

What Is Twin Zygosity DNA Testing?

Dizygotic, or fraternal, twins occur when two distinct eggs are each fertilized by a distinct sperm. In rare cases, dizygotic twins can even have separate fathers. Monozygotic twins, on the other hand result when one sperm fertilizes one egg, and that embryo splits into two. That means that monozygotic, or identical, twins always contain exactly the same genetic material or DNA, because their DNA came from the exact same gametes.

A twin zygosity test simply analyzes the DNA of each twin and checks whether or not they are the same. A simple DNA test can show conclusively whether or not a pair of twins are identical or fraternal. That knowledge carries implications beyond the satisfying of curiosity; identical twins are genetically more compatible with each other, meaning they are excellent candidates for all kinds of organ and tissue donations. At Fastest Labs, we conduct all DNA tests professionally, quickly, and accurately. That's the Fastest Labs way.


Twin DNA Test Services


Legal Paternity Testing

Our Legal Paternity and DNA Testing Services

DNA test results usually carry important news. That's why we take care to make sure our results are the fastest and most reliable results you can obtain anywhere. We handle all of our testing samples with the utmost confidentiality and discretion, so you can know that important information about you isn't compromised. No matter your reason for doing the testing, you can know that your DNA test results will be accurate and will get to you fast and discreetly.

We provide legal and non-legal DNA and paternity testing services for both individuals as well as employers. Please contact a DNA test lab nearest you to find out more about our testing services in your local area.


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Why Obtain a Twin Zygosity DNA Test?

Verify Genetic Similarities

Twin Zygosity DNA Test Services

The only way to know zygosity for sure!

Other traditional means of determining zygosity (the eye test, placenta count, etc.) are unreliable at best. At times, they're actually misleading. Until you actually get a professionally executed DNA test, you can't know for sure. There are lots of reasons for wanting to know, including important medical and legal questions, but don't overlook the value of satisfying your curiosity by finding out the truth once and for all. You could even turn the whole process into a fun family activity or science project for your kids' school.

Get Twins DNA Tested Today!

Donor Qualification Process

Twin DNA Testing Services

Assess and understand your options!

When it comes to organ and tissue donation, many times the most difficult part of the process is finding a match. Family members are much more likely to qualify as donors, and the most likely to do so are identical twins. Fraternal twins only share as much DNA as typical siblings, while identical twins are for all intents and purposes genetic matches. That means an identical twin can be counted on to provide organs and tissue to his or her twin with the highest possible success rate. That information isn't always necessary, but in emergencies, it can save valuable time in moments when it's really needed.

Be prepared for medical emergencies!


What Is The Process for Twin DNA Testing?

The skilled DNA testing staff at Fastest Labs always follows the most demanding standards for test accuracy. Our process is streamlined to make sure that our clients get the most accurate results possible as quickly as possible, every time.

  1. Our lab techs take a buccal swab from each twin.
  2. The twins' samples are analyzed for repeating DNA sequences.
  3. Fast, accurate results are sent to you as soon as possible.

At Fastest Labs, we take all necessary precaution to protect your samples from contamination and your identities from being divulged without your consent. We maintain strict confidentiality in all testing scenarios. Our goal is to make you comfortable, and we go to every effort to make your testing experience pain and hassle-free. And we know your time is important, so our DNA testing lab staff will get you in and out in no time.

For more information on DNA twin testing from Fastest Labs, contact us today. We're standing by to answer all of your important DNA testing questions.


Additional DNA Tests

Along with our twin zygosity DNA testing services, we offer a full array of industry-leading DNA testing services, including paternity and maternity DNA testing. No matter your reason for obtaining a DNA test, we will make every effort to get you confidential, accurate results as fast as possible. Some of our most popular DNA testing methodologies and varieties include the following:


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The Fas-Tes® franchise (owner of FastestLabs.com) is one of the fastest growing 3rd party collection drug, alcohol and DNA lab test franchises in the nation. With explosive demand, the drug, alcohol, and DNA testing industry has quickly become one of the fastest growing industries in the world. 

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Certified DNA Testing

Benefits of Twin DNA Testing at Fastest Labs®:

  • Accurate DNA Test Results

    We offer certified and accurate DNA test results. Learn More

  • Affordable DNA Test Pricing

    Our DNA testing labs are always affordable and we will strive to meet or beat competitor pricing. Learn More

  • State-of-the-Art DNA Lab Testing Facilities

    Our DNA lab testing facilities are always clean and comfortable. Learn More

  • Medically Reliable DNA Test Results

    We provide accurate DNA test results to help with medical donor qualification. Learn More


Genetic Truth Just a Phone Call Away

Twin DNA Testing Services

The skilled DNA testing staff at Fastest Labs is standing by to answer any of your DNA testing questions. Whether you need paternity, maternity, or twin zygosity DNA testing, with Fastest Labs you get results that you can count on. We follow the strictest standards and best practices for DNA testing to always ensure that you get accurate results, fast.