Family Relationships

For questions related to estate settlement, aboriginal status/membership, immigration applications and family reunification, DNA testing can help you verify biological paternity, maternity and other family relationships. Whether you are just curious about your biological family or have a legal challenge to resolve, TheDNALAB is ready to help.


Are you my Mother?

Children get 50% of their DNA from each parent. You can verify the mother/child relationship (maternity) without having to test the father.

Are we Identical Twins or Fraternal?

Identical twins share the same DNA profile. Fraternal twins are reported like full siblings.

Grandparents and Grandchildren

Grandparents and Grandchildren

Biological grandchildren have on average 25% of their DNA from each grandparent.

Full or Half Siblings

Full or Half Siblings

Brothers and sisters can verify if they have the same father and/ or mother.


Are you the Biological Aunt (or Uncle)?

Also known as ‘avuncular’ testing, aunts and uncles are often tested to verify extended family relationships (e.g. when the biological parents are deceased or otherwise not available for testing).

Are you just curious? Or do you want a test result you can take to court?
Compare the benefits of Curiosity vs. Legal DNA tests by clicking here.

Or call us today (1.877.779.3715). We will answer your questions and help you get the right DNA test for your personal situation.

Percent of DNA shared by family members

Relationship DNA Shared Results Reported As
Parent/Child50%Probability of Paternity/Maternity: 
99.95% and higher (or 0%)
Grandparent/GrandchildAvg. 25%Likelihood of Relatedness (%)
Full Aunt/Uncle of Nephew/NieceAvg. 25%Likelihood of Relatedness (%)
Half Aunt/Uncle of Nephew/NieceAvg. 12.5%Likelihood of Relatedness (%)
Identical Twins100%Identical vs. Fraternal Twins (full sibling)
Full SiblingAvg. 50%Likelihood of Full Sibship (%)
Half SiblingAvg. 25%Likelihood of Half Sibship (%)

With all of the tests above, the conclusions of the analysis will be reported as a Combined Relatedness Index or Likelihood of Relatedness, compared to two unrelated individuals. We cannot guarantee conclusive results prior to testing as the actual result will depend on how much, if any, DNA is shared and how common that DNA is in the general population.