A grandparent test, carried out in the absence of the alleged father, determines the relationship between a child and the parents of the alleged father
A Grandparent DNA Test determines whether a couple could be the biological grandparents of a child. This is an indirect way of determining family relationships when the alleged father is not available for the paternity test. The results of the grandparent test can be used as evidence in claims for Social Security benefits and other inheritance claims as well as in some immigration cases.
In the test, the child’s DNA profile is compared with the DNA profiles of the biological parents of the alleged father. Since a child inherits half of her DNA from the mother (maternal side), the paternal half should match the DNA passed on by the presumed grandparents. For a more agile analysis, the mother’s participation is recommended; Absent grandmother tests take much longer to complete due to the extensive testing that is required.