Paternity and DNA testing in Mesa, AZ compares cheek-swab samples to confirm whether a man is a child's biological father, with legal results for court or personal results for peace of mind.
How It Works
WALK-IN
Quick Cheek Swab
Results 3-5 days
What Is a Paternity Test?
A DNA test compares cheek-swab samples to show whether two people are biologically related.
It's most often used to confirm paternity, but it can also confirm sibling, grandparent, and aunt or uncle relationships.
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Legal tests are collected by our staff with ID checks and a documented chain of custody, so results hold up for court, custody, child support, and birth certificate changes
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Personal tests use the same lab science for private answers, but they can't be used in court
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Prenatal tests can confirm paternity before the baby is born, from 10 weeks of pregnancy
Every sample is processed by an AABB-accredited lab, the standard for paternity testing.
DNA Tests We Offer in Mesa
Personal vs. Legal Paternity Test: Which Do You Need?
Every sample goes to the same accredited lab, with the same science and accuracy.
The difference is who collects the swabs and whether a court will accept the results.
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Personal test: The results are for peace of mind only and can't be used in court
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Legal test: Staff checks photo ID, takes photos, and documents a chain of custody for every sample. That's what makes the results hold up for court, custody, child support, and birth certificate changes
What If the Father Can't Be Tested?
Sometimes the possible father has passed away, lives far away, or won't take a test.
You can still get answers, because his close relatives share much of his DNA. A relationship test compares the child's DNA with theirs to show how likely it is that they're related.
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Grandparent test: compares the child with the father's parents. Testing both grandparents gives the strongest result
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Avuncular (aunt/uncle) test: compares the child with the father's full brother or sister
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Sibling test: compares two children to see if they share the same father, and whether they're full or half siblings
These results are reported as a likelihood of relationship rather than the clear "99.9%" you get from a direct paternity test, so including the mother's sample makes the answer much stronger. Legal versions are collected with chain of custody and can be used for court, custody, child support, inheritance, and immigration cases.
If the father has passed away, ask us about post-mortem DNA testing.
How Accurate Is a Paternity Test?
A DNA paternity test is one of the most accurate tests available.
The lab compares at least 16 genetic markers between the child and the possible father, and results come back as a probability of paternity:
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99.9% or higher: he is the biological father
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0%: he is not the biological father
Every sample we collect is processed by an AABB-accredited lab, the standard for paternity testing, using strict quality checks.
Can a paternity test be wrong? It's very rare with an accredited lab. When problems happen, they almost always come from collection, not the lab: a mislabeled or mixed-up swab, or the wrong person giving a sample.
That's why our legal tests use photo ID, photos, chain-of custody forms, and staff-collected swabs.
A few situations need extra care:
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If the possible fathers are closely related (like brothers), tell us so the lab can test with that in mind
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Identical twins share the same DNA, so a standard test can't tell them apart
Why Mesa Chooses Quick Test Health Services®
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Walk in or book online
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Affordable, Transparent pricing
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Legal and personal options in one place
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Expedited 24-hour results available
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We provide mobile collections
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Locally Owned in East Mesa
Where to Get Walk-In Paternity Testing in Mesa
Right here at Quick Test, on East University Drive at Power Road, in the Baywood Square professional park.
Walk in or book online. Your visit takes about 30 minutes. Test results take 3-5 days or can be expedidted.
Serving: Mesa · Gilbert · Queen Creek · Apache Junction · San Tan Valley · Chandler · Tempe
Common Questions
How much is a paternity test in Mesa? A personal paternity test is $150 with our staff collecting, or $125 with our at-home kit. A legal paternity test for court is $300, and a prenatal paternity test is $1,500. Expedited 24-hour results are $55 more.
How long do paternity test results take? About 3 to 7 business days after the lab receives the samples, or about 24 hours with expedited results. Prenatal results take about 5 to 7 business days.
Can you get a DNA test at the hospital after the baby is born? Yes. We offer mobile DNA collection at the hospital, your home, or your office, so you don't have to wait until you can come in. Call (602) 428-4557 to schedule.