Grandparent DNA Test
When a possible father is not available for paternity testing, one or both of his parents can participate instead. DDC’s Grandparent DNA Test can confirm a biological relationship between a child and their grandparent(s), providing the answers and peace of mind that you need. Call for a free consultation – our knowledgeable customer support representatives are ready to help!
Grandparent DNA Testing Options
GameDay DNA provides two types of grandparent DNA tests: legal and at-home.
Legal Grandparent DNA Tests
For court-admissible results, this option requires that all DNA samples be collected at a certified facility, such as a hospital, medical office, or health department. A sample collector will verify the identities of all tested individuals using government-issued ID or other legal documents to ensure the proper chain of custody is maintained.
At-Home Grandparent DNA Tests
If you don't need court-admissible results, an at-home sibling DNA test may be the right choice for you. At-home testing offers the same level of accuracy as legal tests, as the DDC lab follows the same rigorous procedures. The key difference is that sample collection happens at home and is not witnessed.
Trusted Grandparent DNA Testing
Get tested with GameDay DNA, in collaboration with world-renowned DDC, for sibling DNA testing you can trust implicitly:
Industry-Leading Accreditations: Our US-based laboratory holds AABB, CAP, and CLIA certifications, ensuring the highest standards of accuracy and reliability.
Rapid, Reliable Results: Receive your results within 5 business days of sample arrival at our state-of-the-art facility.
Expert Analysis: Our team of PhD-level geneticists meticulously review every test, guaranteeing unmatched accuracy.
Advanced Technology: Utilizing Next Generation Sequencing (NGS) for 99.99% accuracy in relationship determination.
Comprehensive Support: Our certified genetic counselors guide you through every step, from sample collection to result interpretation.
How the Grandparent DNA Testing Process Works
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Initial Consultation with Support
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Scheduling & Financial Considerations
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DNA Sample Collection Procedure
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Result Delivery & Interpretation
Experts Grandparent DNA Testing
As partners with DDC, we offer scientifically advanced, legally recognized DNA testing services nationwide:
Frequently Asked Questions About Grandparent DNA Tests
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A grandparent DNA test is as accurate as a paternity test, although the conclusiveness of results varies more. For example, the probability of a relationship between a father and child is almost always 99.9% or higher, but for a single-grandparent test (where only one paternal grandparent is tested instead of both paternal grandparents), the probability of a relationship might be 92%—which is nevertheless still considered a conclusive result. To strengthen the conclusiveness of test results, we recommend that both paternal grandparents test—if possible—and that the child’s mother participates in testing as well. When both paternal grandparents and the mother participate in testing, the probability of paternity is nearly always 99.9% or higher.
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You can do this DNA test using samples from just one paternal grandparent and the child; however, the chances of obtaining conclusive results are reduced. If possible, we always recommend including the mother’s DNA in both single-grandparent and grandparentage (both paternal grandparents) DNA tests. Ideally, both paternal grandparents would test, along with the child and the mother.
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Yes, a grandparent test can be done without the mother, although we highly recommend that the mother be included as well. Her participation helps the analysts to more clearly determine which of the child’s DNA comes from the father’s side and which comes from the mother and it can also help to strengthen the probability of relationship percentage.
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Yes; a grandparent DNA test can be used for legal reasons as long as a chain-of-custody procedure has been set up and followed:
The test is ordered directly from DDC
DDC schedules a DNA-collection appointment for test participants at a convenient facility near them
Test participants provide proof of identity at the appointment and DNA collection is witnessed
The facility signs paperwork and returns samples to the lab for testing
Results from a legal grandparent test are court-admissible and can be used for legal reasons such as Social Security, inheritance rights, custody, and more. Results of an at-home grandparent DNA test cannot be used legally.
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Whether the test is an at-home or a legal one, the responsibility is on the tested parties to ensure all parties and/or legal guardians agree to testing.
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Understanding results for a grandparent DNA test is a little tricky, since there can never be a straight “yes or no” answer in relationship testing. Calculations for relationships such as grandparent, avuncular (aunt/uncle), and siblings all involve statistics, and a probability of relationship is given as a percentage in the report:
90% or higher: the relationship is supported by DNA testing
9% – 89%: inconclusive result, and additional parties need to be tested
Below 9%: the relationship is not supported by DNA testing
If a probability of relationship (PRI) of 92% is given for a grandparent test, the result could be understood as: “There is a 92% probability that the people tested share a grandparent/grandchild relationship.”
Schedule an Appointment
Call our relationship testing experts today for your free, confidential consultation!