DNA Test - Tustin, CA

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Health Street provides DNA tests and legal paternity testing in Tustin, California at 3 testing laboratories. Call (657) 295-4833 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 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 - Tustin, California

Tustin CA DNA Testing Locations

Types of DNA Tests at our Tustin, California locations:

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 Tustin 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 Tustin CA

Scheduling a DNA test at one of our Tustin 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 Tustin, plus many more locations throughout California and all across the United States. Not every one of our clinics performs paternity testing in Tustin. We'll show you the nearest locations to get a DNA test in Tustin , CA so you can choose the testing center that is most convenient. When you register, you can also pick the appointment time and date that you prefer.

Why Health Street

A Decade Plus of Experience

Health Street has provided DNA tests since 2010. The first DNA test we performed in Tustin, CA was in 2018.

Dedicated to Excellence

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

Tustin, California - DNA Testing

Paternity Programs in Tustin, CA

In order for an unmarried Tustin father to gain parental rights and responsibilities over his child, as well as have his name placed on the birth certificate, he and the child's mother will need to properly establish paternity. Through the Orange County Parentage Opportunity Program (POP), both parents can sign a Voluntary Declaration of Parentage (VDOP) form to declare the biological father.

Because this is a completely voluntary process, it's crucial that a VDOP form is only completed once a paternity claim has been verified. In the event of any paternity uncertainty, both the mother and presumed father are recommended to first seek DNA testing services to accurately determine the biological father. Once confirmed, paternity can confidently be established to provide the father with parental rights as well as the ability for either parent to request child support services.

Rescinding a Declaration of Parentage in Tustin, CA

For instances where DNA testing was not used to confirm a paternity claim prior to signing a Declaration of Parentage form, a parent may learn later on that the presumed father is actually not the biological father. Having already signed the acknowledgment, the previously presumed father will still hold child support obligations, regardless of him now knowing he's not genetically related.

Through Orange County Child Support Services, a parent can submit a Declaration of Paternity Rescission Form up to 60 days after signing the original to have the paternity agreement removed. Demonstrating the importance of upfront DNA testing, the removal process becomes much more difficult and will likely require legal assistance to help make a claim in court after the 60-day mark.

Assistance Establishing Paternity in Tustin, CA

The paternity establishment process may not always be as simple as submitting a form. In instances where a parent declines to establish paternity on the belief of mistaken paternity or general refusal, paternity can then only be established using a court order. To do so, a parent must first file a petition to establish a parental relationship in Orange County Family Court.

Once a petition is filed, an Orange County judge can issue a summons to the opposing parent to complete the necessary steps to establish paternity. This most likely will include the use of DNA paternity testing to determine the child's biological father. Once paternity is established, the two parents may also move forward with child support, custody, and visitation agreements if necessary.

Last updated 2/21/2023

Neighborhoods In and Around Tustin That We Serve

Cameo Woods
Columbus Grove
El Dorado
La Colina
North Yorba
Rancho Mariposa
Red Mill Estates

Additional Services

Health Street offers a variety of other services, including:


"Parentage and Paternity." Orange County Child Support Services, https://www.css.ocgov.com/newcust/parentage
"Paternity." Superior Court of California, County of Orange, https://www.occourts.org/directory/family/paternity.html
"What is an Action to Establish Parentage?" Superior Court of California, County of Orange, https://www.occourts.org/self-help/familylaw/parentage.html