A legal paternity test in Mesa, AZ is a legal DNA paternity test collected by trained staff with ID checks and a documented chain of custody, so the results can be used for court, custody, and birth certificate changes.
How It Works:
WALK-IN
Quick Cheek Swabs
Results 3-5 days
What Is a Legal Paternity Test?
A paternity test is a DNA test that shows whether a man is a child's biological father.
Every child inherits half of their DNA from their mother and half from their father, so the lab compares the child's DNA to the possible father's. What makes a paternity test legal isn't the science, it's how the samples are collected: a neutral, trained professional verifies everyone's identity with photo ID, takes photos, and records every step in
a chain of custody until the samples reach an accredited lab. That paper trail is what lets a judge, attorney, or government office trust the result.
Legal paternity tests are used for:
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Custody and parenting time cases
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Child support orders
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Adding or changing a father's name on a birth certificate
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Inheritance and estate claims
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Adoption proceedings
How Does a Legal Paternity Test Work?
At the lab, scientists look at specific spots in the DNA called genetic markers, places where people's DNA naturally varies.
A standard paternity test compares at least 16 to 24 markers between the child and the possible father. At each marker, the child carries one version from the mother and one from the father. If the possible father has the matching version at every marker, the report shows a probability of paternity of 99% or higher.
If he's missing matches at several markers, he's excluded, and the result is 0%.
Including the mother's sample helps the lab tell which half of the child's DNA came from her, so the father's half is easier to confirm. That's why we test the mother at no extra charge when she comes. The whole collection takes about 30 minutes, and results come back in 3 to 5 business days, or about 24 hours with expedited processing.
What to Expect at Your Legal Paternity Test
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Bring photo ID for every adult and the child's birth certificate. A parent or legal guardian must be with any child being tested
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We verify identities, take a photo of each person, and have each adult sign the chain-of-custody form
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Our staff collects the cheek swabs. It's painless and takes a few seconds per person. You never handle your own sample
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Samples are sealed in front of you and sent to an AABB-accredited lab
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You receive a notarized report in 3 to 5 business days, or about 24 hours with expedited results
Plan on about 15 to 20 minutes for the whole visit. Can't come in? We offer mobile legal collections at your home, office, or hospital room.
Legal vs. Non-Legal Paternity Test
Both tests use AABB-accredited lab, the same cheek swabs, and the same science, so the answer is just as accurate either way.
The difference is proof of identity. With a non-legal (personal) test, nobody verifies who gave each sample, so the report can only list the names as they were written on the swabs. That works for private answers, but a court has no way to confirm the samples weren't switched or collected from someone else.
A legal test closes that gap. Our staff checks photo ID, photographs each person, collects the swabs, and seals and documents every sample before it ships. That chain of custody with the AABB accreditation,what makes courts, attorneys, and agencies accept the notarized report.
If there's any chance the results will end up in court, choose the legal test from the start, so you don't have to test twice.
Why Mesa Chooses Quick Test Health Services®
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Same-day testing, no appointment needed
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Affordable paternity testing
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Mother tested at no extra charge
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Notarized, court-ready reports
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Expeditated results in 24 hours
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Results released only to the people you authorize
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Mobile collection available
Where to Get a Legal Paternity Test Near You in Mesa
Same-day testing at Quick Test, on East University Drive at Power Road in East Mesa.
Walk in or book online, and the collection takes just a few minutes. Receive your test results in 3-7 business days
Serving: Mesa · Gilbert · Queen Creek · Apache Junction · San Tan Valley · Chandler · Tempe
Common Questions
What does 97% mean on a paternity test? It means the results strongly support that he is the father. In Arizona, a genetic test showing 95% or higher probability creates a legal presumption of paternity. Most legal tests report 99% or higher when he's the father, and 0% when he's not.
How Much Is a Legal Paternity Test? $299, at Quick Test Health Services including collection, chain-of-custody paperwork, AABB-accredited lab processing, and a notarized report. No hidden collection fee. Covers up to 3 people: the child, the possible father, and the mother. If the mother comes, we test her at no extra charge, which makes the results even stronger.
Can someone make you take a paternity test? A person can't force you, but a judge can order one in a paternity, custody, or child support case. Refusing a court-ordered test can lead to the court deciding without you.