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Siblingship

Siblingship DNA Testing determines the statistical probability of whether siblings (brothers and sisters) share the same two parents or not. The cost of the DNA testing service includes two siblings, but you may add more as needed; for instance a third sibling.

In situations where the alleged parents are unavailable for testing, a DNA siblingship test can be performed to analyze the relationship of biological siblings. Including one common parent greatly increases the accuracy of this type of analysis and is recommended if at all possible.

Siblingship DNA Test

Unlike a paternity test which will always provide a conclusive result, siblingship tests are different. This test will give you a siblingship DNA index. When the index is below 1.00, this indicates that the siblings are not related. If the siblingship DNA index is greater than 1.00, this indicates that the two tested individuals are more likely to be true biological siblings. The higher the value of the siblingship DNA index, the greater the likelihood that the two individuals are true biological siblings.

To analyze the possibility that the siblings share only one common parent versus two common parents (mother and father), a half siblingship DNA index is obtained. The ratio of the half siblingship DNA index versus the full siblingship DNA index would provide you with an idea of whether the two individuals are more likely to share only one common parent (e.g. mother only) or two common parents (mother and alleged father).

Procedure:

Our professional medical assistant will rub a swab on the inside of both cheeks of the grandparents and the child. The child and the grandparents can swabbed at different occasions if that is more convenient. This is a painless and non-invasive procedure. It will take no more than 10 minutes.

Our DNA test providers are accredited by leading institutions. Call us if you want to see a certificate.