The probability of relationship (PRI) is given as a percentage in your relationship DNA test results report. You can interpret your results based on the following:
- 90% or higher: the relationship is supported by DNA testing
- 9% – 89%: inconclusive result, and additional parties need to be tested
- Below 9%: the relationship is not supported by DNA testing
If a probability of relationship (PRI) of 93% is given for a relationship test, the result could be understood as: “There is a 93% probability that the persons tested share a grandparent/grandchild relationship.”