Call Now to Register

(209) 554-6858

DNA Test - Modesto, CA

Health Street provides DNA tests and legal paternity testing in Modesto, California at a centrally located testing laboratory. Call (209) 554-6858 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.

Schedule DNA Test

Workforce Screening, Digitally Delivered

Legal Paternity Test
Thank you
Maternity DNA Test
I would like to thanks Louis he helped me a lot to get that appointment .
Legal Paternity Test
It was easy, fast and nice service
Legal Paternity Test
It was easy & fast on the results I was 100 satisfy I defiantly recommend this place if you want a DNA done or anything else
Legal Paternity Test
I was kind of nervous going in but as I entered and was welcomed by the ladies at the desk my nervousness went away and I felt very comfortable. Your staff was very professional and friendly. And me and my son appreciated that very much. Wish you all a wonderful day
5.0 out of 5 stars (9 reviews)
1 of 5
1541 Florida Avenue
Suite 102
2 of 5
1524 Mchenry Avenue
Ste 120
3 of 5
2112 Mchenry Avenue

4 of 5
1524 McHenry Avenue

5 of 5
1340 Mitchell Road


DNA Testing Modesto, California


Types of DNA Tests at our Modesto, California 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 Modesto DNA testing technicians are trained to follow these guidelines so that the results will be legally admissible.

How to schedule a DNA Test in Modesto CA

Scheduling a DNA test at one of our Modesto 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 Modesto, plus many more locations throughout California 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 Modesto CA


Proving Paternity for Child Custody Purposes in Modesto, CA

If you live in Modesto and want to prove paternity for child custody or child support services, the Stanislaus County Department of Child Support Services is the government agency that can help with establishing parentage. The Department of Child Support Services is located on E. Hackett Road in Modesto.

In California, including Modesto and Stanislaus County, if a child is born to unmarried parents, legal paternity (and parentage, including both parents) is established through a voluntary declaration of parentage that is signed by both parents. If both parents do not sign the declaration of parentage, a court order must determine parentage for child custody and child support purposes.

If one parent will not admit they are the child's parent, the Family Court will order the child and alleged parent to provide saliva samples for genetic (DNA) testing. The Family Law Clerk's Office in Stanislaus County is located on I Street in Modesto. Parents can also voluntarily agree to genetic testing through the Department of Child Support Services.

Local DNA Stories

53-year-old adopted twin sisters from Escalon learned about their biological father in November 2019 for the first time. The Modesto Bee reported that Jo Ann Beukelman, who now lives in Tulare, and Lee Ann Bergwerff, who were raised by dairy farmers John and Connie Van Vliet, used DNA tests and research to uncover their father.

They appeared on TLC's show "Long Lost Family," which helped them to identify their biological father, Tony Cardoza. It turned out that Tony had lived and worked at the Spreckels sugar plant in nearby Manteca for 40 years. Tony had no idea that his girlfriend of fifty years earlier had been pregnant with twins when she left him while he was on a hunting trip. Jo Ann and Lee Ann had also been informed through adoption records that their biological father was dead.

Notable historical events related to DNA testing in Modesto, CA

Modesto won't soon forget the 2002 disappearance of Laci Peterson, which resulted in the high-profile murder trial and conviction of her husband Scott Peterson in her death and the death of her unborn child, Connor. Scott Peterson was convicted of first degree murder of Laci and Connor and is currently on California's Death Row.

A side note to the Laci Peterson tragedy is a mistaken paternity and child support order for the daughter of Scott Peterson's girlfriend, who testified for the prosecution at his trial, Fresno resident Amber Frey.

ABC News reported in September 2005 that Anthony Flores had been paying child support to Frey for four years, believing he was the biological father of Frey's daughter. A DNA test showed with 99.9% certainty that Flores could not be the girl's biological father. Instead, DNA testing indicated that Modesto, CA restaurant owner Christopher Funch was the child's biological father.

Why Choose Health Street


DNA Testing Experience

Health Street has been performing genetic tests nationally since 2010; our first DNA test in Modesto, CA was in May of 2014. Since then, our Modesto clinic locations have completed 53 DNA tests for local residents at our Modesto specimen collection sites, plus thousands more in other California locations and across the USA.

Commitment to Community

Health Street and its staff are dedicated to the people of Modesto, California, and to serving their DNA testing needs. We are sensitive to issues surrounding these important, family defining laboratory tests.

DNA Testing Locations


Clinic Hours of Operation for DNA and Paternity Testing in Modesta

1541 Florida AvenueSuite 102Modesto, CA 95350
Pre-registration required,Walk-in with barcode:

Monday: 7:30 AM - 4:00 PMTuesday: 7:30 AM - 4:00 PMWednesday: 7:30 AM - 4:00 PMThursday: 7:30 AM - 4:00 PMFriday: 7:30 AM - 4:00 PMAbout this Location: For DNA testing in Modesto, California, you can find our location on the corner of West Granger Avenue at Florida Avenue, next to the First California Physician Partners office.

Areas we Serve in Modesto:

Maze Blvd. Paradise Rd.
E. Rumble Rd. Mchenry Ave.
Bangs Ave. Carver Rd.
Sylvan Ave. Roselle Ave.

Additional Services Provided


We also offer other services, such as:

Over 10,000 companies trust Health Street

How it Works


Register online, quick and easy


Visit a nearby Health Street clinic


View your secure results, on any device

All Reviews

Legal Paternity Test
By on
Excellent service
Legal Paternity Test
By on
Excellent Service
Legal Paternity Test
By on
Shelly was very helpful and sweet.
Legal Paternity Test
By on
Been waiting a lot of years for this...thank you