Accredited USA Lab
Testing performed by a fully accredited laboratory in the United States.
Legal Twin Zygosity Test $275
Quality Legal Twin DNA Testing
Twin DNA testing determines whether twins are fraternal twins or identical twins. A Legal twin zygosity DNA test may be used for legal court cases or in some cases it can be used to help solve any health problems the twins may encounter later down the road in life. A perfect example, if one of the twins needs an organ or tissue transplant, the identical twin is very often the most perfect match. It is important to note that the Twin Zygosity test does not confirm sibship for participants who are not identical twins.
25+ Years of Experience
Trusted by families nationwide for over two decades.
46 Marker Testing
Higher marker count for greater accuracy and confidence.
Fast & Private Results
Quick turnaround with complete confidentiality.
About Twin DNA Testing
Identical twins are formed from one fertilized egg. In early development, this fertilized egg, called a zygote, which usually develops into one individual child, splits to form two identical embryos. Because the twins both come from the same one egg and the same one sperm, they have the same DNA.
Fraternal twins, however, develop from two different eggs fertilized by two individual sperm cells. Fraternal twins do not have the exact same DNA, although they share some of the DNA, which they inherit from both parents. In some rare cases, fraternal twins may actually have different fathers.
Sometimes, before birth the doctor may be able to tell whether the conceived twins are identical or fraternal through an ultrasound examination or determine this when the twins are born by doing an examination of the placenta.
These methods are not 100% accurate, however. Additionally, medical records regarding zygosity get lost, or doubts arise due to physical characteristics. Scientists recommend twin DNA testing to determine the zygosity of twins if the question lingers. In such cases, only by performing a twin DNA test will you be able to reveal the truth regarding zygosity. A twin zygosity DNA test compares the twins’ DNA profiles to see whether they match—an exact match proves that the twins are identical while anything other than an exact match indicates the twins are fraternal.
Our 34 Marker Test
$125
-
24-34
Marker Count
-
FREE
mom inclusion
-
High
Conclusiveness
-
FREE
2-Way Shipping
-
Our 46 Marker Test
$175
-
46
Marker Count
-
Extra Fee
for mom inclusion
-
Highest
Conclusiveness
-
FREE
2-Way Shipping
-
Typical Competitors
Up to $299
-
16-22
Marker Count
-
Extra Fee
for mom inclusion
-
Variable
Conclusiveness
-
Variable Pricing
on 2-Way Shipping
-
The Legal Twin Zygosity DNA Testing Process
The legal twin DNA testing process is quite simple. When you place your order, you may choose to use our professional collection service (collection at one of our clinic locations) or have a test collection kit shipped free to your doctor's office.
Order Your DNA Test $275Place Your Order & Choose Collection Method
Begin your legal twin DNA test by ordering online or by phone and selecting either professional collection at a clinic or having a kit shipped to your doctor’s office.
Schedule & Complete Sample Collection
If using your doctor, confirm they can perform the collection and we’ll send a chain-of-custody kit with a prepaid return mailer. If you choose our service, we’ll schedule your appointment at one of 4,000+ clinic locations at a time convenient for you.
Samples Sent to Lab & Testing Begins
After collection, all samples and documentation are sent directly to the laboratory. You’ll receive an email notification once your samples are received and testing is underway.
Receive Notarized Legal Results
When testing is complete, results are emailed as a PDF (if selected) and a notarized hard copy is mailed to the billing address. No materials are shipped to you other than the official results.
Legal Twin Zygosity Testing Reviews
For over 25 years, families across the United States have trusted PaternityUSA for reliable DNA testing and knowledgeable client support, serving hundreds of thousands of clients nationwide with fast, confidential results.
“In my opinion I am very satisfied. I have an adult daughter that’s 24 years old now that I did not know I had. The results came in very quickly, took a couple of days, and I am very pleased with this product. If I need it again, this is what I’ll get. I will definitely recommend this to anybody that needs to do a DNA test.”
