About DNA Sibling Testing
Siblingship Testing simply means to “establish the probability of relationship between brothers and sisters”. This type of DNA test involves testing two or more people who potentially share the same biological parent or parents.
Siblingship Testing can be used to resolve the following circumstances:
- Distinguish between half and full or unrelated brothers/sisters
- Prove family relationships
- Confirm relationships after being separated at birth, during childhood, through adoption or other circumstances
- Illegitimate offspring needing to prove a family relationship for situations such as inheritance rights, etc.
- For general self-knowledge and peace of mind
How accurate is a Siblingship Test?
Test accuracy is based on multiple factors, but primarily on the genetic information found within the tested individuals, which is true for any laboratory. Since Siblings have the same Parent(s), they have matching genes much more often than do two unrelated individuals. When matches between two potential Siblings are found, calculations are made to determine the probability that a Sibling relationship exists. However, there are millions of genetic combinations when a child is created, and it quite possible, merely based on the “genetic lottery”, that two siblings will not show having similar DNA even if they look alike.
For this reason, the laboratory encourages the testing of additional family members, if available, in addition to the Possible Siblings, to order to improve the ease and accuracy of the test. (If two or more people suspect themselves as siblings, one way to achieve more accurate results is to be tested along with the Possible Common Mother or Father, if they are available to donate samples.)
Therefore, unlike Paternity or Maternity Tests, a Sibling Test cannot be determined as conclusive (certain). Instead, the laboratory breaks down the genetic profile of each individual and determines the probability of relationship.
DNA Identifiers’ Siblingship Tests are the most advanced, accurate, state of the art genetic tests available today. Our Legal test results are obtained using strict chain of custody and photo documentation and are notarized.
DNA Identifiers offers both Court-Admissible Legal Sibling Tests and Non-Legal Home Kits. If you need a clinical or mobile collection, DNA Identifiers will make an appointment for you or arrange for a professional collector to meet you at a safe location of your choice, most likely your home or lawyer’s office. Our unique mobile service will save you time, money, gas, travel expenses and the hassle of fighting traffic and driving long distances. Plus, all DNA samples are painlessly obtained using a cheek swab (special cotton swab), not a blood draw.
Other Sibling Testing Options:
- Mitochondrial DNA Test to prove a maternal (mother) relationship
- Y – Chromosome DNA Test to prove a paternal (father) relationship (males only)
