Twin Zygosity DNA Test
$109 – One Day Results
Twin Zygosity Explained
Zygosity is about the genes in twins. Science confirms two twin types: identical and fraternal. There might be a third type, half-identical or polar-body twins, however this isn’t proven yet. This could explain why some fraternal twins look alike. Only DNA testing can only show if twins are identical or fraternal.
Identical twins form when a single egg splits into two, known as monozygotic. Fraternal twins result from two eggs and two sperm, known as dizygotic. Observing twins doesn’t reveal their type, only a Twin Zygosity DNA test can do that.
This DNA test is a simple and painless test that analyzes the DNA of each twin to determine whether they share the exact same DNA. Identical twins will always have the same DNA profile. Monozygosity is the scientific term for identical siblings. Fraternal twins, referred to as dizygotic, will have different DNA profiles, just like any other siblings.
How Accurate Is a Twin Zygosity Test?
Our Twin Zygosity Test Kit is designed not only for ease and comfort, allowing you to perform the test at home, but our testing is unmatched with a 100% accuracy guarantee.
We understand the importance of timely answers, so we strive to ensure that the entire process, from sample collection to result delivery, is as swift and seamless as possible. Once you have completed the simple testing process and your samples have arrived at our lab, your results will be carefully prepared and ready in just one business day.
Is This Twin DNA Test Legally Admissible?
At-home DNA tests, often referred to as non-legal tests, are designed for personal use and carried out in the comfort of one’s home. While these tests offer similar genetic information to their legal counterparts, the critical difference lies in their application. Non-legal tests aren’t admissible in court because they don’t follow the strict chain of custody typically required by legal standards. Almost all of the DNA Twin Zygosity tests we do are for private use.
Legal DNA tests are essential when you need the results to be admissible in court or other legal situations. These situations may include, but are not limited to, establishing paternity for child support cases, verifying relationships for immigration purposes, determining eligibility for social security benefits, or confirming biological relations for inheritance purposes. In most cases when a legal Twin Zygosity test is ordered, it is due to a pending medical procedure where one of twins is proving their DNA is identical for a donor match. If you are wondering if a legal Twin Test is needed for your situation, please contact one of our Genetic Consultants to discuss your circumstances.
For a DNA test to be considered legal, it must follow strict chain of custody procedures. This ensures that the sample is handled correctly and the results are officially documented, making them acceptable in legal contexts.
Twin Testing Can Help Settle Questions
You get the following benefits with a Journey Genetic Testing Twin Zygosity test:
- Peace of Mind: Our zygosity test can provide a “Yes” or “No” answer about whether those who submit DNA are identical or fraternal twins.
- Medical Insights: Identical twins are more likely to share the same genetic disorders than fraternal twins. If one twin is diagnosed with a genetic disorder, the other twin may also be at risk.
- Personal Identity: Discovering zygosity contributes to a sense of identity, highlighting the uniqueness or shared genetic traits between you and your twin.
- Assess Future Possibilities: There is an increased probability of conceiving twins again for women who have had non-identical twins.
- Great Gift Idea: A Twins DNA Test is also a unique gift idea for multiple birth parents or their children.
How Much Is A Twin DNA Test Kit?
Our Twin Zygosity test is $109. Everything you need is included:
- Rush shipping of your Twins DNA Test kit with a USPS tracking number.
- Complete, easy-to-follow instructions on how to take collect the DNA samples.
- A pre-paid overnight FedEx label to send your samples to our lab.
- Two DNA sample collection swab packages, containing two sets of swabs (4 total) in each package
- Email your 100% accurate results in 1 business day after all DNA specimens arrive in our lab.
If you need to test more siblings (triplets, quadruplets), you can choose this option while placing your order.
How Do I Order A Twin Zygosity Test?
If you want to order a DNA testing kit, you can do so online 24/7. We use the highest level of security for your privacy and peach of mind when processing online orders. You may also order a DNA kit , or if you require assistance with an existing kit, you can easily get in touch by phone. Contact one of our Genetic Consultants team at 855-362-5224. This number is available for both placing orders and seeking any help you might need. Additionally, you can request a callback if you prefer not to wait on the line.
FAQs About Twin DNA Testing
No. The testing is done only using the DNA from the twins. The results will be 100% accurate.
The answer may surprise you! While identical twins always have the same biological father, fraternal twins can have different fathers. This can happen if a woman has sexual intercourse with two different men around the same time when both embryos are conceived. While it is not common, we have seen this happen several times over the years.
Identical twins almost always have the same blood type. We say almost because we have seen an extremely rare exception. In contrast, fraternal twins can either have the same blood type or different blood types.
Twins with separate placentas aren’t always fraternal. To know for sure, you need a twin zygosity DNA test.
Before DNA testing became common, doctors and parents believed that if twins had their own amniotic sacs and placentas, they must be fraternal.
Fraternal twins begin when two different sperm fertilize two separate eggs. These fertilized eggs grow separately in their own ‘in-utero homes’ and can be girl/girl, boy/boy, or boy/girl.
Identical twins begin when one fertilized egg splits into two. This usually occurs around days 4 or 5, after the placenta and amniotic sac have already started forming. However, if the fertilized egg splits before the placenta and amniotic sac usually begin forming for identical twins, like around days 2 or 3, each zygote grows its own sac and placenta.
So, what might seem like fraternal twins to a doctor may actually be a pair of identical twins.
Typically, older women have a greater likelihood of conceiving twins compared to younger women. A woman who is 35 years old is four times more likely to have fraternal twins. As women approach menopause, they undergo hormonal changes, leading to an increase in their follicle-stimulating hormone levels.
The phrase “mirror twin” describes a unique category of identical, or monozygotic, twin pair. These twins look like they’re looking in a mirror because their special traits, like birthmarks, dominant hands, or other features, are on opposite sides.