HOW IT WORKS
WALK-IN
15-Minute Visit
Results 3-5 days
How Legal Paternity Testing Works
Every legal paternity test answers one question: Is this man the biological father?
To answer it, the lab compares DNA from a simple cheek swab. The cells inside your cheek carry your full genetic code, taken from the child and the alleged father. A child inherits half their DNA from each biological parent, so the lab matches specific genetic markers between the two samples. When enough markers line up, the result confirms paternity with over 99.9% certainty; when they don't, it rules him out with 100% certainty.
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What makes the test hold up legally isn't the science—it's the chain-of-custody. From the moment you walk in, we verify each person's photo ID, photograph them, and document everyone who handles the sample until it reaches our AABB-accredited lab. That unbroken paper trail is what allows a court or agency to trust that the sample came from the right person and was never tampered with.
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You can walk right into our Mesa lab for a legal paternity DNA test with no appointment required.
Standard results are ready in 3 to 5 days, and expedited rush options are available.
Who Accepts Legal DNA Paternity Tests?
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Court-ordered cases — Custody and child support proceedings.
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Immigration — USCIS petitions and embassy submissions.
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Birth certificates — Adding or amending a father's name.
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Estate & probate — Inheritance and benefit disputes.
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Family-law attorneys — Attorney-managed cases needing documented results.
What to Bring?
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Photo ID for every adult testing — a driver's license, state ID, or passport. This is what makes your results legally valid.
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For a child being tested—bring their birth certificate. The parent bringing them just needs their own photo ID.
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Your court order, if you have one — bring it and we'll collect exactly what the court asked for.
Legal DNA Paternity Testing FAQ
Can I use this DNA test in court? Yes. Our legal paternity tests are 100% court-admissible. We check everyone's ID, take photos, and use a strict chain-of-custody process. This ensures a judge, lawyer, or state agency in Arizona will accept your official lab results for child support, custody, or birth certificate changes.
What does "chain-of-custody" mean for a legal DNA test? It's the documented paper trail proving your sample went from the right person straight to the lab without tampering — verified ID, a photo, and a signed record at every step. It's the difference between a result that's simply accurate and one a court will accept.
How long does it take to get legal results? Our standard legal results are ready in 3 to 5 days. If you are facing a strict court deadline or a sudden hearing date, we also offer expedited rush options to get your official answers back even faster.
How is this different from the home-kit paternity test I see in stores? A home kit has no verified identity and no chain-of-custody, so a court won't accept it — it's for personal knowledge only. Our legal test documents every step, which is what makes it suitable for legal submission.