| Individuals who need, or are simply curious, to know whether or not they are biologically related. |
| Family members trying to trace long lost relatives. |
| Individuals needing confirmation of sibship for immigration purposes. |
What can the test tell?
The test will generally tell whether the samples belong to full siblings (siblings who share two biological parents), half siblings (where there is one parent in common) or two individuals with no biological relationship at all.
Can the test still be performed without a sample from the parent?
Where you aren't able to supply a sample from the parent, we have other methods of identifying siblings, including X and Y Chromosome testing.
However, there are limitations to this type of DNA testing. Without a sample from the parent, it is not possible to definitively exclude a sibling relationship between two individuals. We always recommend that wherever possible, a sample from a parent is submitted for testing together with the two sibling samples.
Read more about the limitations of sibling DNA test
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