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DNA Test - Seattle, WA

Health Street provides DNA tests and legal paternity testing in Seattle, Washington at 2 conveniently located testing laboratories. Call (206) 347-1012 or schedule online. We offer legal paternity tests, sibling studies, grandparent DNA tests, avuncular (aunt or uncle) testing, and postmortem DNA testing to determine if people are biologically related.

Set up DNA testing appointments online. Test results can be used in court for child support or to change a birth a certificate; it can also be used for simple peace of mind. Appointments can be scheduled together or separately. Legal DNA tests are done by cheek swab at our testing centers. We can also extract DNA samples from hair follicles, fingernails, and other specimens.

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Legal Paternity Test
Cecilia Rodriguez is Very helpful and quick in response. Deserves promotion!! Seattle, WA for paternity DNA test.
Legal Paternity Test
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1229 Madison Street
Suite 610
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5300 Tallman Ave NW

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1512 Broadway

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3050 NE 127th Street

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3820 Rainier Ave South

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3223 1st Ave S

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140 4th Avenue N

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836 NE Northgate Way


DNA Testing Seattle WA


Types of DNA Tests at our Seattle WA clinics:

The most commonly ordered DNA test is a Paternity Test to conclusively establish whether or not a man is the biological father of a child.

Paternity Testing can be performed at our testing centers. DNA Testing can be done for other close family relationships, such as:

Grandparent DNA Test (if the father is not available for testing)
Sibling DNA Test (possible brothers, sisters, or half-siblings)
Avuncular DNA Test (aunt/uncle and niece/nephew)

Specimens we can test for DNA

The easiest and most reliable way to obtain a DNA sample for paternity testing is to swab the inner cheeks of the people being tested. These skin cells are known as buccal cells, and they rub off easily onto cotton swabs and remain in place for analysis by our laboratory. Other specimen samples, such as hair follicles, fingernails, and garments that might contain someone's DNA, can also be tested. An Alternative Specimen DNA Test is done by registering online and shipping the specimens to us.

Legally Admissible DNA Tests vs. "Peace of Mind" At-Home Tests

A Legal Paternity Test is a court admissible DNA testing service. Accurate results for DNA paternity testing with 99.99% confidence or greater take about a week.

When deciding which type of DNA test is right for you, consider first what you might do with the results. In order for the results of a DNA test to hold up in court, for child support, or to change the name on a birth certificate, the test must be done at a clinic using strict chain of custody procedures. Our Seattle DNA testing technicians are trained to follow guidelines that ensure that the results can be used for legal purposes.

How to schedule a DNA Test in Seattle WA

Scheduling a DNA test at one of our Seattle clinics is simple and fast, and we often have appointments available in the same week. It's always helpful to schedule in advance to make sure you get the time you want. Register online, or please call our customer service team, which can help you book your appointment over the phone.

We have state of the art testing labs and friendly clinics that perform the DNA sample collection in Seattle, plus many more locations throughout Washington and across the United States. During registration, we'll show you the nearest locations so you can choose the one that's most convenient. You'll pick the times and days that you prefer.

Facts about DNA Testing in Seattle WA


Seattle DNA Test Leads to a Mother's Day Reunion - 51 Years Later

Seattle resident Diane Kubis gave her daughter up for adoption in 1967, at the insistence of her parents, when she was just 17. Unbeknownst to her, her daughter had been searching for her birth mom for 27 years. When Diane finally got a DNA test, memories of the birth and adoption came flooding back.

Though the adoption records had been permanently sealed, the maternity test provided irrefutable results - she found her daughter, Diana Marie. The first thing that Diana wanted to tell her mother was that she was also a grandmother! Diana, who was living in Hawaii, decided to move to Seattle. And coincidentally or not, her flight arrived on Mother's Day.

Sperm Donor Becomes Dad 20 Years Later – and Starts Dating Mom

When Seattle communications specialist Aaron Long donated sperm to earn money after teaching overseas, he had no idea that 20 years later, he would start dating the very woman who recieved his donation, Jessica Share. Jessica gave birth to a daughter, Alice Mikell, and was living in Oregon. Upon taking a DNA test, she found a proven biological relationship: Aaron was indeed her long lost sperm donor dad.

Although Long was an anonymous donor at the time, the DNA match led to five months of texting and a burgeoning relationship with Alice. When a space opened in Long's communal living co-op in Seattle, he suggested that she and her mother move in. Soon after, Aaron and Jessica started dating, and the three are now happily living together.

Proving Paternity for Child Custody Purposes in Seattle

Establishing paternity in the legal sense means determining a child's father according to the law. In the case of a newborn or minor child, confirming that relationship creates rights and responsibilities for both the mother and the father.

Paternity is established automatically in Washington state when parents are in a domestic partnership or are married. However, for children born outside of these circumstances, the legal father of the child is typically established by a paternity test.

In Seattle, parents may be able to sign a "Voluntary Acknowledgement of Paternity" form in front of a notary and use this to petition for legal paternity. This form is available at the Seattle Field Office of the Division of Child Support, or from a King County Public Health Center. Often times, however, DNA testing is desired and/or required by the courts in order to remove all doubt about whether someone is truly the father of a child.

Why Choose Health Street


DNA Testing Experience

Health Street has been performing genetic tests nationally since 2010; our first DNA test in Seattle, WA was in April of 2020.

Commitment to Community

We are dedicated to providing the highest level of service for a paternity test in Seattle, Washington. Health Street is very proud of our commitment to the DNA testing needs of the community.

DNA Testing Locations


Clinic Hours for DNA Testing in Seattle, Washington

1229 Madison StreetSuite 610Seattle, WA 98104
Pre-registration required,Walk-in with barcode:

Monday: 7:30 AM - 3:30 PMTuesday: 7:30 AM - 3:30 PMWednesday: 7:30 AM - 3:30 PMThursday: 7:30 AM - 3:30 PMFriday: 7:30 AM - 3:30 PMSaturday: 11:30 AM - 12:30 PMAbout this Location:You can find us a short walk from Seattle University.

Neighborhoods in Seattle served by our clinics:

Central District
North Admiral
Capitol Hill
Bitter Lake

Additional Services Provided


We also offer other services, such as:

Washington Background Check for Seattle, Washington Employers

Works Cited

"Paternity in Washington." DivorceNet by NOLO, 23 November 2019,
"A national sample of US paternity tests: do demographics predict test outcomes?" The Journal of AABB: Transfusion, 23 November 2019,
"From sperm donor to 'Dad': When strangers with shared DNA become a family." NBC News, 18 November 2018,
"Seattle mom reunites with daughter 51 years later after DNA test." WHAS11 ABC, 13 May 2018,

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