Paternity testing provides scientific evidence of whether a man can be a child's biological father. Paternity is determined by comparing the child's DNA with the DNA profile of the alleged father.

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).

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A grandparent 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.

Maternity testing provides scientific evidence of whether a woman can be a child's biological mother. Maternity is determined by comparing the child's DNA with the DNA profile of the alleged mother.

A single-party DNA test is a way to keep

a sample of DNA on file should it ever be needed.