There are certain cases where biological motherhood may be questioned or in doubt. In these instances, a maternity DNA test provides indisputable proof. This may be requested by immigration authorities, or by a court deciding a custody or support case. It may be requested by the family as evidence if family history is uncertain. \r In rare circumstances, a baby may have been stolen or children may have been accidentally switched at birth. If this has occurred, this test is invaluable in proving motherhood.