A formal paternity test report contains information about the specific loci on the DNA analyzed to generate the paternity result. The main section you will want to focus on is the Probability of Paternity at the bottom of the report. This value will fall into one of two categories:
Inclusion: A probability value of at least 99.99% for a trio case (if the mother, child and alleged father were all tested) means that the tested man is the biological father.
Exclusion: A probability value of 0% means that the tested man is not the biological father.
The probability of paternity never reaches 100% because a paternity test is calculated against a population database. A 100% probability is only possible if every man in the world is tested. A probability value of 99.99% or higher eliminates most other men from being the biological father, virtually proving the paternity relationship between the child and the tested man.
Probability values below 99.99% for a standard paternity test (trio) are considered inconclusive—paternity tests that show this result require extended testing in order to have a definitive inclusion or exclusion result. When our laboratory encounters such cases, we perform extended testing of up to 25 locations on the DNA without any additional charge, so that you only receive results that are accurate and conclusive.
