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What Is Grandparent DNA Testing?

A grandparent DNA test determines the statistical probability of whether or not the tested grandmother and or grandfather share a biological relationship with the tested child or children.

Grandparent DNA testing is often used in-directly to establish paternity by testing the alleged father’s parent(s) against a possible grandchild.  A grandparent DNA test can be performed when the alleged father is unavailable or unwilling to perform a DNA test.

In this instance you can use 1 or more grandparents to to essentially fill in the blanks for the missing father. It is often very helpful but not necessary to add the mother of the child to the grandparent test.

Let Us Serve Your Grandparent Testing Needs

Our grandparent DNA test can analyse 150% more markers than the standard 16 marker grandparent test, and 50% more markers than the premium 25 marker grandparent test offered by many competitors.

Our grandparent results provide 100% accurate & reliable answers in your home, in court, or even as seen on TV.

Order Your DNA Test $145

Buy Your Grandparent DNA Test At PaternityUSA.com!


Our DNA testing lab performs 3 of 4 grandparent tests in the US. Seen on TV shows like Maury®, Steve Wilkos® & Paternity Court®, Get Accurate Answers!

The Most Trusted DNA Testing Lab In USA


Grandparent testing lab is AABB accredited. Our grandparent test analyzes more markers, uses the most advanced processes, and produces 100% accurate accredited results.

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FREE USPS RUSH DELIVERY of grandparent kits. And, paternity results are ready in 1-day. Other labs want you to prepare your own kit, but Don’t Risk Compromised DNA.

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We provide the most accurate grandparent testing in the USA. Don’t risk buying your DNA test from an entity that sends them to the lowest bidder for testing. Our lab performs all our own grandparent tests for only $145.

The Only Thing Cheap About Our DNA Testing Is The Price

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How To Increase The Accuracy Of Your Grandparent DNA Testing

The grandparent DNA test may be done with only one of the grandparents and the alleged grandchild. However, we strongly recommend the mother or known parent of the child take part in the test as well, if at all possible. This will increase the conclusiveness of the test.  Each person inherits half of their DNA from their mother and half from their father. When the known parent participates in the grandparent DNA test, they are compared to their child.  The DNA inherited from that parent is eliminated from the child’s genetic profile. As a result, we are able to identify and isolate the DNA from the parent in question; then compare that DNA to his or her possible parent, the grandparent, giving a more conclusive result.

If more than one grandparent is able to take part in the test, combining the two known parents of the alleged father provides the father’s complete genetic profile. This test is a good option to consider when both grandparents can test, or the child’s mother is not participating in the test. Although this test is conclusive, adding the child’s mother to the test reveals the complete genetic footprint. This type of testing produces a result as conclusive as a paternity test.

Order Your DNA Test $145

The Grandparent DNA Testing Process Is Easy:

Upon receipt of your grandparent order, we will ship a sterile DNA collection kit for FREE.

Sample Collection:
 Sampling is acquired via a cheek swab, using a Q-tip type apparatus referred to as a buccal swab.

Sample Analysis:
When all the samples are delivered to the lab, an auto email will be sent advising when results will be available.

Results Reporting:
Grandparent DNA Test results are sent to the email address on file. Also, If you ordered hard copy results, they will follow shortly in the mail to the billing address listed on the order unless advised differently.

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Order Non-Legal Grandparent Test $145 Order Legal Grandparent Test $255

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It isn’t uncommon for test participants to live too far apart to get together and do the DNA collection.  We offer an option to have multiple collection kits shipped out for these situations. When ordering, simply choose the option for an additional address. We will send the second collection via the same shipping method as the first.  The collection kits are linked through reference number and bar codes. When the samples are received back in lab, they are matched to your case through the bar code and reference numbers.

In a scenario where the alleged grandchild is a male and the paternal grandfather is able to take part in the DNA test, a Y-STR test will conclusively determine whether or not they share the same male lineage.

On the other hand, if a relationship is trying to be established on the mother’s side, an mtDNA test will offer a conclusive answer regardless of gender.

Other relationship tests may also help establish paternity or maternity, such as a Siblingship test, or a Aunt Uncle DNA test with one or both of the alleged parent’s biological siblings.

Additionally, if there are other paternal relatives able to take part in a DNA test, such as a known sibling to the alleged father, a Family Reconstruction Test offers a combined probability of the relationship to the family members.

The grandparent DNA testing process is very simple. DNA is collected on a cheek swab, also called a buccal swab. The swab is painlessly rubbed against the inside of the cheek. In this process, skin cells collect on the swab.We conduct all of our tests twice. For that reason, there will be 4 buccal swabs per person in your collection kit. Do two swabs on each side of the mouth. It is best to rinse the mouth with water and refrain from smoking or drinking coffee or tea for 2-3 hours before the DNA collection. Once the swabs have been taken, place the samples in the return prepaid pre-addressed mailer. Finally, simply drop the samples off at the courier’s location or box to send your kit back to the lab for testing.

When all samples are in the lab, you will be notified via email that testing has begun. We will email the results of your grandparent DNA test when the testing is complete, within 3-5 business days. If hard copy results are ordered, the report is sent to the billing address unless otherwise noted.

We ship our collection kits with free USPS rushed delivery Monday through Friday to physical addresses in the contiguous USA. Orders received and processed by 2:00 PM EST are shipped the same business day. Orders received after 2:00 PM EST are shipped the following business day.

Our grandparent DNA testing package is complete with testing kit, DNA analysis and test results. Some companies advertise that you can make your own collection kit by using your own Q-tips®. However, we do not recommend this practice. There is a risk of multiple DNA samples being found on Q-tips® that are not sterile, or that may be handled by more than one person. Q-tips® you may have in your home could already have DNA from other sources on them. For this reason, we send a grandparent DNA collection kit containing sterile buccal swabs to you at no charge. We even ship the collection kit to you via FREE USPS rushed delivery so you have your sterile medical swabs as ready for use fast.

With PaternityUSA.com you can purchase the best quality grandparentage test in the industry at the cheapest prices. Our lab is the largest and most trusted name in DNA testing through-out the USA and even the world. All of our DNA tests are performed by top-notch geneticists using proven scientific methods and state of the art equipment in our AABB accredited laboratory. Our service is simply unparalleled and our prices are very affordable. You can rest assured your DNA samples are secure and your results will be accurate. With today’s technology and inexpensive pricing on DNA relationship testing, there is no longer a need to go without knowing the truth about a biological relationship.

Informational grandparent DNA testing can provide you with the peace of mind of whether or not a biological relationship exists between the tested participants. If you need the results of your grandparent DNA testing to be admissible evidence in a court of law or other governmental domestic agency, then purchase our AABB accredited legal grandparent DNA test. Our legal grandparent DNA test results can be submitted as evidence in child support, visitation rights, change name on the birth certificate, estate, wills, probate situations, and/or any other type case where the relationship of the tested parties must be proven by an AABB accredited DNA test. If your DNA test is for immigration purposes, the USCIS/ICE & Dept. Of Homeland security may require AABB accredited DNA evidence of the grandparentage relationship. If so, then order our AABB accredited DNA test for immigration purposes.

The most common method of DNA collection is through a cheek swab. However, we understand there are times when test participant is unable to submit a swab in a grandparent DNA test, such as may be the case when a family member may be deceased, incarcerated or otherwise unavailable.  For these reasons, we offer forensic processing services for other types of DNA samples. Ear wax, hair (must have the root ball attached), mucous on a tissue, finger or toe nail clippings, and toothbrushes are common forensic samples. Additionally, in certain cases tissue and/or blood samples may be available from a medical examiner or coroner’s office. Forensic sampling prices apply for any non-standard DNA sample. For pricing and more details on the process, please contact a DNA Case Manager.

We Look Forward To Serving You!

Immigration Client

Thank you for your immediate and prompt service...Highly recommendable for people wanting to provide proof to the USCIS...Good job Paternity USA...Again thank you so much. Another VERY HAPPY customer 🙂

G.B. - Immigration Client

Steve S - Home Paternity

We just did a paternity test and used our doctor as the collector - the process was easy, legitimate and cheap! I highly recommend for those of us on a budget!

Steve S - Home Paternity Test

Eric M - Legal Paternity

Awesome. Easy. Best Price Around! Got my son's birth certificate right now. Thank you all!

Eric M

Tom - YSTR Male Line

I purchased this Y-STR test to verify that my son is the father of my grandson. Now I know for sure this sweet little boy is my son's baby. Thanks Paternity USA for the peace of mind.


Lockhart - Sibling Test

I took this test last month and my results were accurate. Easy process, good customer service and i like that they notified me of the status of my case all along the way. I always wondered and now I finally know for sure. I highly recommend you all every chance I get. Lisa L

Lisa Lockhart

Nguyen - Immigration

I picked paternity usa for my immigration test for my mother and sisters. I'm so glad I did. Everything great - very good service and fast.

T. Nguyen

Brenda - Half Sibling Test

I wondered at first, because they are cheaper than everyone else, and felt I shouldn't skimp on this. I didn't skimp - I just found the best deal! My test result was very definitive and left no room for question. Pick Paternity USA, they will do a great job. I can't say enough good about them!

Brenda Leighton

J Luna - Legal Paternity

I'm so glad I chose this company for my legal paternity test. They scheduled an appointment for me and my daughter within two days, and the whole process was complete within a week. I didn't have to do anything but show up for the appointment - they handled it all.

J Luna

Jenn - Home Paternity

Thank you guys for a process that is easy and quick. You've been so helpful! Jenn


mtDNA Female Line

I was given up for adoption and later found a possible sister. We did a mtDNA test to see if we have the same mother, and I finally connected with my family. I will always have my adoptive family, but it's nice to add to that! The process was easy and the service was great! 🙂

mtDNA Tester

Claitte Family Immigration

The immigration process was a hard process for me and my family and PaternityUSA has experience and was able to help us through the whole thing. Happy with your service and I will let my friends know. Sincere thanks - the Claitte Family

The Claitte Family

Juanita - Grandparent

I called PaternityUSA to help us with getting my grandchildren in from Jamaica, and so they performed the AABB accredited DNA testing for immigration. The process only took (2) weeks, and everything was very smooth. I cannot thank these people enough.


Peter Johnson - Grandparent

I had bought a DNA kit at CVS pharmacy, but I wanted to see if I was the grandparent. I discovered that I could not use the drug store kit for grandparent testing. I called paternityusa, they were able to use the kit I bought, and I'm very pleased with the work they performed.

Pam Johnson

Rick Davis - YSTR Male Line

I found my long lost brother after 40 years separation at birth. We did a y-str test, and it was very accurate. I happy to have my brother in my life again

Rick Davis

Sally Valega - Avuncular

This company did a wonderful job for our family, and we're so grateful we were able to find them on the internet. THANKS!!

Sally Valega

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