Grandparentage DNA Test
The grandparentage DNA test allows for the assessment of a biological link between a child and their grandparents when direct paternity or maternity cannot be tested. By comparing genetic profiles, this test provides a reliable solution for guiding a search for familial lineage.
Your DNA Test in 5 Steps
Order Online
Order your DNA test online and add your options if necessary.
We ensure activation with the partner laboratory.
Receive your instructions via email
No kit is sent.
You will receive all instructions directly by email: client codes, forms, procedures, and the laboratory address.
Home collection
Easily perform your home sample collection using a simple buccal swab to collect a saliva sample.
Send to the laboratory
Place your samples in paper envelopes and send them to the laboratory following the instructions provided in the email.
Receive your results
eceive your results by email within a few days.
Options
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Additional participant: +99€
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Non-standard sample (hair, nails...) : +69€
Timelines
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Oral swabs: 5 to 7 days after receipt
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Non-standard samples: 10 days or more
Guarantees
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Analysis of 21 genetic markers
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Laboratory accredited to ISO 17025
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This paternity test is an indirect test based on statistical probabilities. Inconclusive results are possible.
Who can participate?
The grandparentage DNA test is based on genetic transmission between generations. A child inherits 50% of their DNA from their biological mother and 50% from their biological father, which means they share on average 25% of their genetic heritage with each of their biological grandparents.
To assess a relationship, the laboratory analyzes the number of genetic matches between the child and their presumed grandparents, then calculates a statistical probability of kinship. To obtain reliable results, both biological grandparents of the presumed parent must participate in the test with the child.
Indeed, this test allows for the indirect reconstruction of part of the parent's genetic profile, but it only analyzes about half of their genes.
The grandmother
The grandmother can take part in the test if she is the biological mother of the parent being investigated. For a maternity search between the grandmother and her grandchildren, a mitochondrial DNA test is recommended.
The grandfather
The grandfather can participate in the test if he is the biological father of the searched parent. In the case of paternity testing exclusively between a grandfather and his grandson, the Y chromosome DNA test is recommended.
Grandchildren
One or more grandchildren may participate in the test, whether they are full siblings or half-siblings. The participation of multiple children enhances the reliability of the paternity analysis with the biological grandparents.
The Involvement of a Parent in a Parentage Test
A grandparentage DNA test is based on the comparison of genetic profiles between a child and their biological grandparents. A child shares on average 25% of their DNA with each of their grandparents, which allows the laboratory to statistically assess the existence of an indirect biological link when the parent cannot be tested.
When possible, it is strongly recommended to include the DNA of a biological parent (mother or father) in the test. This additional participation allows the laboratory to better isolate the genetic contribution from the parent and refine the analysis of the relationship with the grandparents.
Result: more reliable and accurate conclusions.
Generally, the higher the number of genetic profiles analyzed, the more conclusive the grandparentage test is.
We offer our services in partnership with Endeavor DNA Laboratories. The tests are conducted exclusively by this certified laboratory, to which you will send your samples directly after placing your order.
Laboratory
Your information is strictly protected: the laboratory only receives your samples, without access to your personal data or your order on InfoTestADN.com. The analyses are conducted solely based on the consent you provide and exclusively for the selected test. No information is transmitted or reused by a third party. You remain entirely in control of the sending of your samples, and we ensure that the separation between your data, your order, and the analysis conducted by the laboratory guarantees maximum confidentiality.