OK, I should not have said "no way" (never say "never" Image may be NSFW.
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), however, as a challenge cache owner, I would not take the trouble of visiting the profile of the person who found their cache, checking the Lab caches, then mixing that with data from other finds to determine if the person met the challenge.
Most challenges based on cache finds require either a list of GC codes (the lab caches on that page don't have codes or ID numbers) or a bookmark list (lab caches don't work there, either). Maybe a GPX file with your finds - nope, can't use that for lab caches either. And since that profile page does not provide coordinates for the lab caches, they also could not be used to verify a geographic challenge (e.g. X number of finds in a particular geographic place).
I'll modify my statement to say that the nature of lab caches makes it highly unlikely you could use them to qualify for these types of challenge caches. Image may be NSFW.
Clik here to view.
Clik here to view.

Most challenges based on cache finds require either a list of GC codes (the lab caches on that page don't have codes or ID numbers) or a bookmark list (lab caches don't work there, either). Maybe a GPX file with your finds - nope, can't use that for lab caches either. And since that profile page does not provide coordinates for the lab caches, they also could not be used to verify a geographic challenge (e.g. X number of finds in a particular geographic place).
I'll modify my statement to say that the nature of lab caches makes it highly unlikely you could use them to qualify for these types of challenge caches. Image may be NSFW.
Clik here to view.
