Proving the paternity of your child does not always have to include the father. If the father is deceased or not willing to be tested, the next option would be relationship testing. Relationship DNA Testing can include a number of paternal relatives and are able to achieve the same results.
With all relationship testing, the mother of the child is always urged to test. This allows less of a chance to receive inconclusive results. If the mother is not available for testing, then it is recommended to add additional relatives for testing.
Sibling DNA Test
A DNA sibling test compares 2 or more individuals to determine if they are biologically siblings. This test can be used to determine a full sibling or a half sibling relationship. Sibling testing is most often used to determine if the individuals share the same possible father.
Grandparent DNA Test
Grandparent DNA Testing is used to establish a biological relationship between potential grandparents and a possible grandchild. DNA testing with a grandchild and grandparent is useful when trying to determine paternity and the alleged father is not available.
Aunt/Uncle DNA Test
Aunt/Uncle (avuncular) DNA testing is a comparison of DNA between an aunt or uncle and a niece or nephew. A full brother or sister to the alleged father may test with a child to establish if there is a biological relationship. An avuncular DNA test is commonly used if the alleged father is unavailable.