What do you need this DNA Siblingship Test for?
There are a number of reasons you may want to book a DNA Siblingship Test.
It may be for your own peace of mind to determine whether two people are full or half siblings (sisters and brothers) or you may be required to prove siblingship to support an immigration application.
Please choose from the following options that best describes your reasons for wanting a DNA Siblingship Test?

Prices from £145
You need a Siblingship Test for your own peace of mind
The results of this test cannot be used for legal purposes.

Prices from £325
You need a Siblingship Test for legal purposes

Prices from £325
You need a Siblingship Test for an immigration application
Need more information?
Call us on 0191 233 1414 and speak to a member of our friendly Customer Services Team.
More information about siblingship testing
What relationship does siblingship testing prove?
- Full siblings have the same mother and the same father.
- Half siblings only share one biological parent.
Who needs to be tested?
- The potential siblings
- Any available parents – for example a shared mother, or if testing if two individuals are half siblings, both mothers.
How reliable are the results?
When testing if two individuals are Full or Half Siblings:
- Two Siblings and one shared parent – 96%
- Two Siblings – 78%
When testing if two individuals are Half Siblings or are Unrelated:
- Two Siblings and both mothers – 94%
- Two Siblings one of their mothers – 86%
- Two Siblings – 73%
Where a test comes back inconclusive, NorthGene™ will recommend which additional individuals may be required to provide a sample to improves the chances of gaining a conclusive result. There will be additional charges associated in these instances.
Other things to consider
If the potential siblings may be related in any other way (for example they may be cousins), please call us on 0191 233 1414 prior to booking your test.
