Legal Grandparentage DNA Test

Not sure if you need an AABB-accredited court admissible test? Our expert case managers are here to assist you through the entire testing process.

Because court admissible testing requires strict sample collection procedures and stringent documentation requirements, Endeavor DNA Laboratories maintains a network of approved sample collection sites across the United States. Our expert case managers will work with you to schedule a sample collection in your area at a time convenient for you.

A grandparent DNA test calculates the likelihood of relatedness between a child and one or both grandparents. Because a child inherits exactly 50% of its genes from its biological mother and 50% from its biological father, that child shares exactly 25% of its genes with each biological grandparent. If both biological parents of the alleged father are tested and they do not possess the paternal genes between them, then they are excluded (ruled out) as the biological grandparents. When both biological parents of the alleged father possess the paternal genes between them, they are not excluded as the biological grandparents.

For grandparentage tests, we recommend testing both alleged grandparents as well as the mother if possible to achieve the most accurate results – see Missing Parent page.

It is important to understand that it may not be possible to obtain conclusive results in a grandparent DNA test if both alleged grandparents are not tested.  This is because testing one alleged grandparent allows us to identify only half of the possible genes of the unavailable alleged parent.  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.

Once we receive your samples, your AABB-accredited court-admissible test results will be completed in as little 5 business days. Rush testing options are available.

Call today to speak with an expert case manager today for a free, no obligation confidential consultation today.

Call Us for a free, no obligation consultation. (915) 519-1600