Lab caches are an experimental cache type sometime found at Mega-Events. They count towards your total finds but currently are not included in your My Finds Pocket Query. That means mygeocachingprofile.com won’t automatically know about them and might get your total find count wrong!
Fortunately, there’s a way to enter your lab caches on the mygeocachingprofile.com site. Just go to the Customize Profile page > Additional Caching Information section and you’ll find a tool to enter your lab caches. All you have to do is pick the date you found one. You can enter the same date more than once if you found many on the same day. Then the next time you upload your My Finds PQ, your lab caches will automatically be included in your find stats including your milestones and most well rounded day stats.