Immigration DNA testing is a paternity, maternity or kinship test that is conducted at the request of the U.S. Embassy, Department of Homeland Security, or United States Citizenship and Immigration Services (USCIS).
Full siblings, half siblings, or not siblings at all; use DNA testing to discover the possibilities.
Twin DNA testing can be used to confirm if two individuals are identical or non-identical (fraternal) twins. Should a twin need an organ or tissue transplant, an identical twin would be an optimal donor in most instances.
A grandparentage DNA test is used to establish a genetic family relationship between a possible grandparent and grandchild or to establish paternity if the child's alleged father is not available for testing.
Aunt/Uncle (avuncular) DNA testing may be used if the alleged father is unavailable for testing. The alleged father's brother or sister may be tested with the child to determine if there is a biological relationship.
The male lineage or Y-STR paternal lineage test can confirm a father-son relationship by determining if a child is related to an alleged father's other male relative, for example, his brother, father, or grandfather.