For lineage-based tests, reliability depends on several things such as the size of the database, the sampling of the lineages and the accuracy of lineage matches. Our database is the most comprehensive resource of African lineages available. We have worked with historians, archeologists, anthropologists and other geneticists to build the largest collection of African lineages
in the world. We use a sequence similarity score (SSS) measure to determine matches. The SSS measure is a likelihood estimate based on the frequency of identical and closely related (>99%) haplotypes. It is our degree of confidence in your results.