I want a grandparentage test, who do I need samples from?
For a paternal grandparentage test you ideally need a sample from the child, the child’s mother, and the father’s parents. If there is no sample from the mother, this test is still possible but will take longer. For a maternal grandparentage test you ideally need a sample from the child, the child’s father, and the mother’s parents. If there is no sample from the father, this test is still possible but will take longer.