DNA Test - Gresham, OR

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Health Street provides DNA tests and legal paternity testing in Gresham, Oregon at 2 testing laboratories. Call (503) 821-7867 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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DNA Test - Gresham, Oregon

Gresham OR DNA Testing Locations

Types of DNA Tests at our Gresham, Oregon clinics:

Paternity Testing can conclusively establish whether or not a man is the biological father of a child.

Relationship Testing for other close family relationships can be performed at our testing centers. Our DNA testing services can confirm or deny biological relationships between grandparents, grandchildren, siblings, half-siblings, aunts, uncles, nieces and nephews:

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 alleged father and child or children. 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 ordering one of our testing kits online and shipping the specimens back to us.

Legal DNA Tests vs. "Peace of Mind" At-Home Tests

A Legal Paternity Test is a court admissible lab testing service performed at an AABB accredited laboratory. 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. A legal paternity DNA test will hold up in court for such matters as child support or to change the name on a birth certificate. This test must be performed using strict chain of custody procedures. Our Gresham DNA testing technicians are trained to follow these guidelines so that the results will be legally admissible.

How to schedule a DNA Test in Gresham OR

Scheduling a DNA test at one of our Gresham 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. Please call our customer service team to help you book your appointment over the phone, or set up your appointment easily online.

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

Why Health Street

A Decade Plus of Experience

Health Street has provided DNA tests since 2010. We have provided DNA tests and paternity tests to thousands of people in Gresham as well as communities all across the nation.

Dedicated to Excellence

We are proud to help families and individuals get DNA testing in Gresham. 

Gresham, Oregon - DNA Testing

Establishing paternity in Gresham, OR

If a baby is born to a married couple, paternity is established automatically, and the husband is considered the legal father. However, when the child is born to unwed parents, they must take further steps to establish paternity. In Oregon, parents can sign an Acknowledgment of Paternity (AOP) but should only do so if they agree about the biological father's identity. Once they sign it, they must file it with Oregon Vital Records and remember to notarize these forms. This is a legally binding document that establishes the legal father, so it is important that there are no doubts about paternity if parents choose this option.

If the alleged father does not believe he is the biological father, he and the mother may have to go to court to determine paternity. The judge will likely order the father and the child to get a DNA test, which can determine if there is a father-child relationship between them. If the DNA tests show he is the biological father, the judge can establish paternity.

Gresham, Oregon: Challenging paternity

Sometimes, parents change their minds about paternity after establishing it. If you signed an Acknowledgment of Paternity and you do not think you are the biological father, you usually have 60 days after signing the form to take it back. You must sign and file documents with the State Center for Health Statistics to cancel the paternity.

If you did not do a DNA test within one year of filing an Acknowledgment of Paternity, you can go to court or the Division of Child Support and do genetic testing to determine paternity.

If the court established paternity, you could also challenge it by signing and filing a court challenge. However, you must prove that the AOP was signed due to duress, material mistake of fact, or fraud. Challenging paternity can be pretty complicated, and you may need an assessment from an attorney.

Last updated 11/1/2022

Neighborhoods In and Around Gresham That We Serve

City Central
North Gresham
Gresham Butte
Kelly Creek
Powell Valley
Wood Village
Maywood Park

Additional Services

Health Street offers a variety of other services, including:


Establish paternity. Oregon Department of Justice. (2021, November 17). Retrieved November 1, 2022, from https://www.doj.state.or.us/child-support/services/establish-paternity/
Welcome to oregonlawhelp.org: A guide to free and low-cost legal aid, assistance and services in Oregon. OregonLawHelp.org. (n.d.). Retrieved November 1, 2022, from https://oregonlawhelp.org/resource/paternity#6