DNA test identifies siblings
A siblingship test is used to determine the statistical probability that two individuals are related as siblings. Direct paternity and maternity DNA tests are always the best option to determine biological relationships. However, in instances where the alleged parents are unavailable for DNA testing, siblingship testing provides another option.
Siblingship results are reported in a different manner than paternity test results. Instead of 0% or 99% or greater probability that you would see with paternity results, siblingship results will indicate if the test participants are more or less likely to be related as siblings based on the genetic material exhibited by each person. The strength of the tests will vary and may not provide conclusive results.