While it is possible that they could be "converted" into caches for the sake of getting PGC statistics to be sensible, eg by force defaulting them to T1/D1 (or maybe T0/D0?) that only solves part of the problem. Although lab caches have coordinates and an owner these are not currently exported. PGC cannot even determine the country they are in. What we need for PGC to integrate lab caches into stats better, is to at least get Groundspeak to export all the lab cache data (ie name, owner, coordinates, date published?). This is a question to raise on the Groundspeak forums.