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Legal Grandparent DNA Testing $255

Why Purchase Your Legal Grandparent DNA Test From 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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AABB Accreditations



We offer FREE UPS overnight delivery of grandparent kits. And, paternity results are ready in 2-days. 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 tests.

The Only Thing Cheap About Our DNA Testing Is The Price

Order Your DNA Test $255



High Quality Very Accurate Legal Grandparent DNA Testing

Legal grandparent DNA testing performs a DNA comparison between an alleged grandmother or grandfather, and grandchild which is admissible in a court of law in all 50 states. Legal grandparent DNA testing will determine a statistical probability of the test participants sharing a biological relationship as that of grandparent/grandchild. Legal grandparent DNA testing may be done with only a grandparent and child; however, it is always highly recommended to add the mother, or known parent of the child, if at all possible.  Doing so will increase the conclusiveness of the test.

How To Increase The Accuracy Of Your Grandparent DNA Test

Each person inherits half of their DNA from their mother and the other half from their father. When the known parent, such as the child’s mother, participates in the grandparent DNA test, they are compared to their child and the DNA which was inherited from that parent can be eliminated from the testing equation. This isolates the DNA from the parent in question, commonly the father, which is then compared to his parent, the grandparent, giving a more conclusive result. If you are not able to add the mother to the test, we recommend choosing the option for testing additional markers as needed. With this option, extra markers will be tested as needed until a conclusive result is reached, or until all possible markers have been tested.

Order Your DNA Test $255


AABB Chain Of Custody Requirements

The AABB guidelines stipulate that for a legally binding or court admissible test must have valid chain of custody.  Simply put, chain of custody refers to the DNA collection in the presence of a medical professional and the legal identification of the test participants.  With every legal grandparent  DNA testing, the sample collection must be performed by a neutral medical professional who has nothing to gain or lose from the result of the test. You may not choose the collector for your legal DNA test unless you use a doctor’s office. Don’t be swayed by other labs saying your neighbor, non related friend, or even lawyer may act as a witness. Our lab offers over 5,000 network locations where your DNA samples can be collected.

Order Your DNA Test $255


Why We Stand Above The Others

Smaller companies who advertise cheap DNA testing allow participants to choose their own collector. Surprisingly, they even mail the collection kit right to the client. Please beware – this practice does not follow AABB chain of custody requirements. Their cheap grandparent DNA testing can end up being very costly to your family down the road.

It’s a direct violation of AABB requirements for anyone associated with the legal grandparent test to be in the possession of the collection kit. This includes any test participant, family members or friends. When collection swabs have been in the possession of someone with an interest in the test result, there could easily be suspicion of tampering. For this reason, we never ship legal DNA collection kit to anyone other than a medical clinic.

Secondly, a legally binding grandparent test must be collected by a medical or clinic professional. With PaternityUSA.com, you can use your doctor for the DNA collection, or opt for professional collection service at one of our over 5,000 clinic locations. Again, having someone known to the test participant act as a collector, or “witness” the DNA collection, does not meet AABB standards. A collection by a neighbor, friend or family member can easily be discredited; causing you to have to pay for another test.

A legal test conducted outside of the chain of custody is easily contested and disputed in court; and more importantly will not stand up as evidence.

In contrast, we don’t bend guidelines and risk injuring your case. Our lab follows every AABB requirement to help ensure your result stands up in any legal matter facing your family. We understand the need for a legal DNA test is usually accompanied by a difficult situation. With that in mind, we handle every case with care and confidentiality.

Order Your DNA Test $255


The Legal Grandparent DNA Testing Process

The legal grandparent DNA testing process is quite simple. When you place your order, you may choose to use our professional collection service (at one of our clinic locations) or have a test collection kit shipped free through overnight UPS to your doctor’s office.

If you opt to use your own doctor for the DNA collection, simply provide their address information when placing your order. We ship a legal DNA collection kit to them using UPS overnight delivery service. We also provide a pre-paid return mailer in the collection kit for their convenience. Please check with your doctor before you order to make sure they agree to provide this service.

Or if you prefer, choose our professional collection option. An agent will call to schedule your appointment at your convenience. We have over 5,000 clinic locations across the country to serve your collection needs.

After the collection, the samples and chain of custody documentation go directly to the lab. When received, we email you a confirmation email to let you know testing is underway. If you order email test results, we email a PDF document of your notarized test result as soon as testing is complete. A hard copy is mailed to the billing address on your order. Nothing is shipped to your home other than your test results.

Order Your DNA Test $255


DNA Collection

The collection process is very simple. DNA is collected through a cheek swab, also known as a buccal swab, which is painlessly rubbed against the inside of the cheek. Our lab conducts all of our grandparent DNA tests twice. For this reason we collect 4 swabs per person. As a general rule, be sure the mouth is clean before swabbing by rinsing with water. Test participants should refrain from drinking coffee or tea or smoking for 3-4 hours before the DNA collection.

In certain situations where a family member may be deceased, depending upon the details surrounding the case, tissue or blood samples from the medical examiner or coroner’s office may be available. Their office should be able to advise you of what type of sample is available. Once you have established this information, call us to speak with an experienced Case Manager to discuss your situation and forensic processing.

Order Your DNA Test $255


Informational Grandparent DNA Testing And Other Test Services

Many times, families need these results to prove grand parentage in court, child custody or support situations, for insurance purposes, estates, wills, to change a name or social security benefits. While our legal grandparent test provides a court admissible certificate to prove your relationship, you may find you only need to verify the relationship for your own peace of mind or curiosity. If that is the case, our informational grandparent test may be best. Whether you chose a legally binding or informational grandparent test, rest assured that you are in good hands with PaternityUSA.  Since our lab is AABB accredited, both legal and informational DNA test samples are processed in the same manner once the samples are in the lab. The difference lies in the collection method – chain of custody.

We offer other relationship tests may also help establish paternity or maternity, such as a Siblingship test, an Avuncular Aunt/Uncle test , a Y-STR analysis with 2 or more tested males, and an mtDNA test for indirectly confirming maternity.


Immigration Test

Thank you for your immediate and prompt service...Highly recommendable for people seeking DNA Testings...Good job Paternity USA...Again thank you so much. Another VERY HAPPY customer 🙂

G.B. - Immigration Client

Steve S

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

Eric M

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

Eric M


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.



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


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


I don't usually write reviews, but I feel like this one is important. To have a lingering question of whether you belong in a family or not isn't anything easy to deal with. I wondered at first, because they are cheaper than everyone else, and felt like this is an area I shouldn't skimp on, but I'm so glad I picked these guys. I didn't skimp - I just found the best deal! My test result was very definitive and left no room for question. I want to let others know that you can find your answer and peace. Pick Paternity USA, they will do a great job. I can't say enough good about them. Thanks - Brenda

Brenda Leighton

J Luna

I am glad I chose this company for my paternity test. They scheduled an appointment for me and my daughter, it was within a couple of days, then the results were emailed to me less than a week later. I didn't have to do anything but show up for the appointment - they handled everything else from beginning to end.

J Luna


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



I was given up for adoption and found a sibling through online records. We did the mtDNA test to see if we have the same mother (who is deceased), and I finally have been able to connect with my family. Even though I will always be thankful to my adoptive family, it's nice to add to that! Test was conclusive, process easy and good communication. Thanks 🙂

mtDNA Tester

Immigration DNA Testing

The immigration process is 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


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


Peter Johnson

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 a grandparent DNA test. I called paternityusa, and I'm very pleased with the work they performed. They really took the time to talk to me

Pam Johnson

Rick Davis

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

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

Ordering Easy As 1 2 3


Choose the type of relationship that you need DNA answers for, and who is available to do the testing.


Decide if you need answers for just personal knowledge or if you need answers for court or other legal matter.


Place order online on our secure shopping cart with credit card or PayPal. DNA test kit is delivered overnight.

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