EDL does not natively have Lab Roll. That’s something you have to add as a “comment” in your EDL’s (select a master clip, figure out what roll it came from, add it to one of the comments fields)
Typically a telecine house doesn’t need the lab roll. If you shot less that 24 rolls, and your dailies were done right, then you should have 24 unique timecode hours in your media that relate to up to 24 rolls of film. All they need is a regular EDL with timecode!
But if you shot more than 24 rolls:
Lab roll could refer to a couple things depending: it could be the camera roll number (A1, A13, B4, C3, etc…). OR it could be the “lab” roll which is typically 3 camera rolls spliced onto a bigger roll of negative for 35mm.
Sounds like, especially since they are looking for the take, that there are a lot of rolls of film.