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Testing performed by a fully accredited laboratory in the United States.
Legal Twin Zygosity DNA Test
The Legal Twin Zygosity DNA Test determines whether twins are identical or fraternal using court-admissible testing performed by an AABB-accredited U.S. laboratory, with professional sample collection and documented chain-of-custody.
Choose Test Kit Options
NEW YORK NOTICE: Due to NY state regulations, we cannot ship home testing kits to addresses within the state of New York. Please call 1-877-786-9543 for assistance.
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.
How Does Our Legal Twin Zygosity DNA Test Compare?
The Legal Twin Zygosity DNA Test provides a reliable and legally recognized way to determine whether twins are identical (monozygotic) or fraternal (dizygotic). All testing is performed by an AABB-accredited U.S. laboratory using established procedures that meet strict legal standards. Results are notarized and accepted for official use in all 50 states.
This test compares the DNA profiles of both twins to determine whether they share identical genetic markers or developed from separate eggs. Identical twins share the same DNA profile, while fraternal twins have genetic similarities comparable to typical siblings.
Legal testing requires a documented chain-of-custody to ensure the identity of all participants. Sample collection must be performed by an approved third party. You may choose to use your own doctor or medical clinic, or our team can schedule an appointment at a nearby professional collection site from our nationwide network.
If the twins live in different cities or states, separate collection locations or appointments can be arranged. Each participant’s sample is securely documented and linked to the same case to maintain legal integrity.
Once all samples are received by the laboratory, testing begins promptly. Results are typically completed within several business days. If email delivery is selected, a PDF report is sent within 24 hours of completion, and a printed copy is mailed shortly afterward.
This legal twin test provides clear, accurate answers through a secure process designed to meet court, medical, or administrative requirements.
Our 34 Marker Test
$125
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24-34
Marker Count
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FREE
mom inclusion
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High
Conclusiveness
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FREE
2-Way Shipping
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Our 46 Marker Test
$175
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46
Marker Count
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Extra Fee
for mom inclusion
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Highest
Conclusiveness
-
FREE
2-Way Shipping
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Typical Competitors
Up to $299
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16-22
Marker Count
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Extra Fee
for mom inclusion
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Variable
Conclusiveness
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Variable Pricing
on 2-Way Shipping
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A Simple, Straightforward Process To Our Legal Twin Zygosity DNA Test
Legal DNA testing follows a secure chain-of-custody process to verify identities and ensure your results are accurate, confidential, and accepted for court or official use.
Buy DNA Kit NowPlace Your Order Online
Choose your legal DNA test and select your preferred collection option: use your own doctor or clinic, or request Professional Collection Service and we will schedule your appointment at a nearby collection site.
Confirm Your Collection Location
If using your own provider, the legal DNA collection kit will be shipped directly to their office. If you select Professional Collection Service, our team will schedule your appointment and email you the date, time, location, and preparation instructions.
Identity Verification & Sample Collection
At your appointment, a trained professional verifies participant identification and collects DNA samples using painless cheek swabs. All materials are properly documented and sent to the laboratory under strict chain-of-custody procedures.
Laboratory Testing & Results
Once all samples are received, testing begins and results are typically available within 1–2 business days. Results are delivered securely by email when testing is complete, and printed reports are mailed shortly afterward.
Answers to Common Legal Twin Zygosity DNA Test Questions
Find answers to common questions about legal twin zygosity testing, including the collection process, turnaround time, and how the results can be used for official purposes.
Yes. The Legal Twin Zygosity DNA Test follows a strict chain-of-custody process and is performed by an AABB-accredited laboratory. Results are notarized and accepted for legal and official use in all 50 states.
Samples must be collected by an approved third party to verify identity. You may use your own doctor or medical clinic, or we can schedule an appointment at a nearby professional collection location from our nationwide network.
Yes. Separate collection locations or appointments can be arranged. Each participant’s sample will be securely documented and linked to the same case.
Testing typically begins once all samples arrive at the laboratory. Results are usually completed within several business days. If email delivery is selected, a PDF report is sent within 24 hours of completion, and a printed copy is mailed shortly afterward.
The report will clearly indicate whether the twins are identical (sharing the same DNA profile) or fraternal (sharing genetic similarities comparable to typical siblings).
No. Legal testing requires professional sample collection with identity verification. If you only need results for personal knowledge, a home twin zygosity test may be a better option.
Legal Twin Zygosity DNA Test Reviews
For over 25 years, families across the United States have relied on our DNA testing for accurate results and dependable service.
“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.”
Private, Secure, and Confidential DNA Testing
Your Privacy is Protected at Every Step
Strict privacy controls are in place from DNA sample collection through result delivery. At PaternityUSA, your DNA and personal information are treated with strict confidentiality and are never sold, shared, or stored in external databases. We Value Your Privacy!
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