A siblingship test  is used to identify biological sibling relationships between two people using DNA testing.

Siblingship DNA tests use the DNA of at least two alleged siblings, which is compared to determine how likely they are to be full or half siblings.

Full Siblingship DNA Test

A full siblingship test ( can be used if two siblings know that they biologically share one parent and wish to know if they also share the second parent as well. If the siblings are full siblings, meaning they have both the same biological parents, they will both have DNA from the same mother and father. The complete DNA profiles of both siblings will be compared to identify their biological relationship.

Half Siblingship DNA Test

Sometimes two people may know they do not share one of their biological parents but are unsure about the other parent. If the two think that they may have a common biological parent, they can undergo half siblingship DNA testing. Half siblings are related only through one parent, either their mother or their father. For half siblings, only half of their DNA will be similar. This means that only half of their DNA can be compared to identify a biological relationship.

Siblingship DNA tests can also be used to identify an alleged father if the father is missing or unavailable for paternity testing. If siblings believe they are biologically related through a shared father, they can undergo siblingship DNA testing to identify this paternity relationship.

Typically, the individuals involved in the DNA test include two alleged siblings and a common biological relative (such as the two siblings’ biological mother, if the same).

If you are interested in learning more about or ordering a siblingship DNA test, contact one of our client service representatives on 0808 234 7027 today.

Siblingship Test Enquiry

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