Sibling DNA test kit
£199.00
A sibling DNA Test kit is an excellent way to determine if individuals share one parent with another individual while a full Sibling analysis determines if both parents are shared with another individual. A sibling DNA test kit is not the same as a Paternity DNA test as it is calculated differently. LEARN MORE
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 find 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.
How is the sibling DNA test kit different from the Paternity DNA test?
A sibling DNA test kit is different from Paternity DNA testing because it does not give a conclusive result. The analysis of both samples will identify the match in their genetic profile and then calculate the possibility of both individuals being half or full siblings.
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Why is the sibling DNA test different from the paternity DNA test?
Unlike a paternity test which will always provide a conclusive result, sibling DNA testing is different. 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. A likelihood of greater than 10 indicates that the siblings are related, either full or half, but a likelihood of less than 0.1 does not support this. A likelihood that falls between 0.1 and 10 is inconclusive, which means that a relationship cannot be determined, based on the data collected and analyzed. The higher the sibling DNA index value, the greater the likelihood that the two individuals are biologically full or half-siblings.
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).
A sibling DNA test kit for two siblings costs £199.00 while the test for two siblings and a parent costs £269.00. You will need to buy the sibling test and then add an additional person to be tested (£70.00). A Legal or immigration sibling DNA test kit is more expensive than a peace of mind test. Learn more
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