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Additional information
The grandparentage test we offer determines the probability that a grandparent is the biological grandfather or grandmother of a child.
A child inherits exactly 50% of its genes from its biological mother and 50% from its biological father. Therefore, this child shares exactly 25% of its genes with each biological grandparent. If both biological parents of the alleged parent are tested and they do not have the paternal or maternal genes between them, then they are excluded as biological grandparents. If both biological parents of the presumed parent have the paternal or maternal genes between them, they are not excluded as biological grandparents.
It may not be possible to obtain conclusive results in a grandparent DNA test if both alleged grandparents are not tested. We recommend testing both alleged grandparents as well as one parent if possible to achieve the most accurate results.
It is also important to understand that, in reporting the results of a DNA grandparent test, the laboratory assumes that the tested alleged grandparents are, in fact, the biological parents of the unavailable, alleged parent. If there is any question regarding the paternity of the unavailable alleged parent, then the alleged biological grandfather should not be tested.
The test protocol is very rigorous and precise, and includes the reading of 22 DNA sequences (22 loci), giving the test a 99.99% certainty if both grand-parents' samples are provided.
Same-Day Delivery
Shipped the same day you order
Maximum Reliability
Standard 20 loci test at no additional cost
ISO 9001 Certified
ISO9001 Accredited Partner Laboratory
ISO 17025 Certification
ISO17025 Accredited Partner Laboratory
Questions?
How does a grand-parentage DNA test work?
In a grand-parentage test, the laboratory compares the child's DNA with that of the grandparents by analyzing specific genetic markers present in the child's and grandparents' DNA. The goal is to verify if the child shares certain genes with the grandparents.
Grand-parentage DNA tests are very precise, especially if the child's parents are included in the process. A test without the inclusion of the parents may be less certain, as there is more uncertainty in the sharing of genetic markers.
The time required to process and analyze your sample depends on the type of report you have ordered. Once it arrives at the laboratory, processing times are as follows:
You will receive an email notification when your report has arrived on the Adnà portal. Simply log in to your account.
We collect your personal information for the following purposes:
Your information is shared with the following partners:
Our tests fall into several categories:
The information extracted from the tests and presented in our reports should be considered as indications of predisposition and not as definitive diagnoses. Their relevance may vary according to numerous environmental factors.
