Legal DNA tests are used in a variety of legal scenarios. For a DNA test to be valid for court, a strict chain of custody must be maintained.
This is a test done to determine the true biological mother of the child. Such cases arise as a result of adoption or surrogacy. When a child is adopted and then later on the biological mother comes to claim her child from the adoptive parents and to establish who the biological mother is, a maternity test can be carried out between the child and the two mothers. This test establishes unquestionably the maternal link between mother and child. This test is 100% conclusive for exclusion and gives very accurate results.