DNA Testing in Redwood City, California

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Health Street offers DNA testing, legal paternity tests, and sibling DNA tests in Redwood City, California at a centrally located testing laboratory. Register now, or call us at (650) 646-2414 or schedule online. with any questions. Our paternity testing (including grandparent DNA tests, avuncular (aunt or uncle) testing, and postmortem DNA testing) determines if two or more people are related.

Schedule your Redwood City DNA test appointment online. Our legal DNA test results can be used in court for matters such as: child support, birth certificates, and custody cases. Appointments can be scheduled together or separately. Legal DNA tests are done by cheek swab at our testing centers. We also offer home DNA test kits for peace of mind. DNA can be tested from hair, fingernails, and other specimens.

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1048 El Camino Real
Redwood City, CA 94063

DNA Test – Redwood City, California

Redwood City CA DNA Testing Locations

Paternity Testing in Redwood City, California

There are several types of DNA testing services that are offered at our Redwood City testing centers to validate close family relationships. The most commonly ordered DNA test is a legal paternity test to conclusively establish whether or not a man is the biological father of a child. Health Street’s 21 marker DNA paternity testing is the state of the art. Our paternity test results are statistically conclusive at the rate of 99.9% or greater.

Other DNA Tests

Relationship Tests to validate grandparent to grandchild, siblings, half-siblings, aunts, and uncles:

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)

DNA tests such as sibling or avuncular studies, can sometimes come back with a result of less than 95% certainty. This is normal, especially if only two parties participate in the test. Adding an additional close relative to the test helps us learn more about the family’s DNA composition and typically leads to a more conclusive result.

Specimens we can test for DNA

The easiest and most reliable way to perform a genetic sample collection for a paternity test is by a swab of the inner cheeks. These skin cells, known as buccal cells, rub off easily onto cotton swabs and remain in place, to be extracted by our testing laboratories for analysis.

Other specimens, such as hair follicles, fingernails, and garments that might contain someone’s DNA, can also undergo lab testing to see if there is a match. These non-standard DNA tests are done by registering online for an Alternative Specimen DNA Test (Nails, Teeth, Fabric). Once registered, you ship the DNA sample to our lab. We’ll attempt to extract the DNA and compare it to a cheek swab of the other party.

Legal DNA Tests vs. “Peace of Mind” At-Home Tests

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 to hold up in court, the DNA specimen must be collected at a clinic using strict chain of custody procedures. The DNA testing technicians at our Redwood City test centers are trained to follow guidelines that ensure that the results can be used for legal purposes.

The results of our legal DNA tests can be used for any legal purpose:

to change the name on a birth certificate
to petition for child support
to petition for survivor benefits
for child custody arrangements
to alter inheritance procedures or wills

Home tests offer more flexibility:

Home DNA tests are specimens containing DNA (or possible DNA) that are shipped to us for analysis. The results of these home tests cannot be used in court (since there is no way to prove whose specimens were actually sent). However, the tests are just as accurate and can provide peace of mind. At-home DNA tests also offer a lot more flexibility.

In addition to commonly mailed in DNA specimens like hair follicles, we can also extract DNA from other bodily fluids. We can even try and lift the DNA left on items like clothing, a toothbrush, or a straw. If we can get the DNA from the alternative item, we can then compare it to another person to see if they are related. Some examples include:

Stained garments
Mucus and other bodily fluids
Soda cans
Chewing gum

How to schedule a DNA Test in Redwood City CA

Scheduling a DNA test at one of our Redwood City clinics is simple and fast, and we often have appointments available in the same week, though it’s always helpful to schedule in advance to make sure you get the time you want. We have clinics in Redwood City, plus many more 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.

You can set up separate appointments for each of the people being tested, either at the same location or at different locations. You’ll get an email and text message with your appointment information. There is no fee if you need to change the time or location of a DNA test appointment at any time.

How long it takes to get results of a DNA test

Paternity tests conducted at one of our Redwood City facilities typically take about a week to come back. Other relationship tests, such as sibling studies, can take a few days longer to come back. When the results are ready, you are notified immediately via email. Then, the hard copies of the paperwork are sent afterward via regular mail.

The DNA test appointment – what to expect and what to bring

The appointment itself only takes about 15 minutes. The specimen collection process is a simple and painless cheek swab. No needles are used. When you’re being tested at our Redwood City clinic, you’ll be asked to provide fingerprints and to show photo identification. We’ll also take pictures of the people being tested so that the final report will include legal assurances of who was actually tested.

For infants, hospital discharge papers qualify as identification. Otherwise, a birth certificate or social security card can be used as ID for a child. No other preparations are required for this appointment.

Does the mother need to be present at a paternity test?

If a man is considered the legal father of a child, then the mother does not have to be present or give consent for paternity testing. However, if he is not currently considered the legal father, then he cannot sign for the child. Therefore, the mother does need to be there. If neither parent is available, other legal guardians can bring the child so long as they have the right to make medical decisions on the child’s behalf.

DNA testing if one party is not in Redwood City

The two parties testing (for example: father and child) do not have to be tested at the same time or even at the same location. We have many clinics across California as well as nationwide, so we can test one party in Redwood City and the other party anywhere else in the USA. The specimens are then matched up in the lab for analysis.

Laboratory certifications

Health Street works strictly with AABB Certified labs for DNA testing. All specimens that are collected in Redwood City or elsewhere are shipped securely from our testing locations to a nationally certified laboratory.

Why Health Street

More than a Decade of Experience

Since 2010, Health Street has offered DNA tests in Redwood City, the state of Redwood City, California, and throughout the nation.  The first DNA test that Health Street provided in Redwood City, CA was in 2018.

Commitment to Excellence

Our mission is to understand the DNA testing needs of our clients. We strive to provide the most accurate, fast, and conclusive paternity tests in Redwood City. 

Proving Paternity for Child Custody Purposes in Redwood City, CA and San Mateo County

In Redwood City and San Mateo County, if a child is born to two parents that are married, it is assumed that the husband is the father of the baby and he automatically becomes the legal father. With many children being born outside of marriage, paternity will need to be established for the father to have legal rights such as visitation, custody, and other legal rights. In Redwood City and other parts of the state of California, there are multiple ways to establish paternity.

A declaration of paternity can be signed voluntarily by both parents at the time of birth. It will be witnessed at the hospital and will be entered into a state database. Signing this document at the hospital also puts both parents on the baby’s birth certificate. A declaration of paternity is only necessary for unmarried couples.
Either parent may request to go to court to establish paternity by filing a petition to establish parental relations. Once served, the parent has 30 days to agree to or deny parenthood. If both parents are in agreement, legal documents may be signed without the need for going to court. If the parents do not agree, a court hearing will be scheduled and DNA testing for paternity may be required by the court.

Experts Say…

According to Joseph R. Zoucha, attorney and counselor at law in Redwood City, CA, “Absent issues of abuse or neglect, it is important that fathers in California are given the chance to bond and care for their child. However, if the child’s parents are unmarried and are no longer in a relationship with one another, fathers could face challenges in obtaining the parenting time they need to develop a meaningful relationship with their child. In part, this is because in order for an unmarried father to seek parenting time, paternity must be established.”

He continues by explaining that a mother can benefit from establishing paternity as well by collecting child support.

He states, “When a father is able to establish paternity, he can begin to build a relationship with his child. In many instances, it is best if the child is able to be raised by both parents.”


Clinic Hours for DNA Testing in Redwood City, California

1048 El Camino Real Suite B Redwood City, CA 94063
Pre-registration required,Walk-in with barcode:

Monday: 9:00 AM – 4:00 PMTuesday: 9:00 AM – 4:00 PMWednesday: 9:00 AM – 4:00 PMThursday: 9:00 AM – 4:00 PMFriday: 9:00 AM – 4:00 PM About this Location: DNA testing in Redwood City is available at this location, a short walk from Hoover Park.

Neighborhoods In and Around Redwood City That We Serve

Friendly Acres
Woodside Plaza
Redwood Village
Redwood Shores
Redwood Oaks
Mount Carmel
Palm Park
Farm Hill
Eagle Hill

Additional Services

We also offer other services, such as:

California Background Check for Employers in Redwood City, CA


“Guiding Parents Through California’s Paternity Process.” Viola Law Firm P.C., https://www.violaw.com/family-law/paternity-and-parental-rights/#:~:text=One%20way%20of%20establishing%20parentage,a%20court%20judgment%20for%20paternity.
“Establishing Parentage (Paternity).” California Courts: The Judicial Branch of California, https://www.courts.ca.gov/1201.htm?rdeLocaleAttr=en
“Establishing paternity benefits California children and parents.” Joseph R. Zoucha, https://www.josephzoucha.net/blog/2019/01/establishing-paternity-benefits-california-children-and-parents/
“Fathers’ Rights Attorney.” Joseph R. Zoucha, https://www.josephzoucha.net/family-law/fathers-rights/
“Neighborhoods.” Walking Redwood City, https://walkingredwoodcity.com/neighborhoods/