Z2124 now appears in the Advanced menu. Z2124 is allegedly the "parent" of Z2122 and Z2123. Thus, it is appropriate for any Z94+ or L342.2+ who has not yet tested positive for any of Z2122, Z2123, or L657. In fact, it should probably be ordered in preference to any of those, unless the haplotype shows an affinity toward one of the three latter.