DNA half sibling test kit

DNA testing for siblings is an excellent way to determine if individuals share one or two parents with another individual.
DNA testing for siblings kit can be used to confirm half or full siblings
UK’s fastest DNA testing kit siblings

How is the sibling DNA Index calculated?

DNA testing for siblings is not a Paternity DNA test kit as it is calculated differently. Our laboratory uses DNA technology to determine whether two or more individuals are full siblings or half-siblings. When both people have the same biological parents, they are classed as full siblings. Half-siblings are individuals who share only one biological parent, either the mother or father.

When testing for sibling relationships, the DNA laboratory will determine the genetic profile of the possible siblings and will calculate a sibling DNA index or likelihood ratio. Full siblings usually have more DNA in common than half-siblings, while half-siblings normally share more DNA than unrelated persons. Learn more

Why is this DNA sibling test different?

DNA testing for siblings is unlike a paternity test which will always provide a conclusive result. When a sibling test is conducted, the DNA laboratory will determine the genetic profiles of the alleged full or half-siblings. Based on the genetic material shared by each sibling, a sibling DNA index or likelihood ratio is calculated to determine the most likely relationship.

It is possible to analyze two individuals to determine that they are more likely to share two common parents versus one common parent (i.e., they are full siblings sharing a mother and father) or that it is more likely that they have one parent in common versus them being unrelated (i.e., that they are half-siblings, with a single parent in common). Learn more

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