This panel is recommended to persons who have tested L22+ before or who have a clear prediction for this haplogroup.
With this DNA test we start with 3 key SNPs:
P109
CTS6868
CTS2208
Then we work down the branches iteratively until we have found your position on the given tree.
The test is completed when the unique phylogenetic position on the tree has been determined.
See this tree diagram to understand the groupings in this panel: