An interesting choice of submission for this challenge. It definately does have a dark, urban feel to it which ties in well with your secret labratory title. Although I think this meets the challenge I do think it only does so very tneuously - if the title wasn't there I'd think this was more of a garage, but that can be forgiven.
Theres plenty of interest here, the room, the objects in the background, the cieling, floor and doors all have lots going on in them and guides the viewers eye around your photo like a real estate salesperson. There is also a narrative feeling at play here like this room is telling a story and the possibilities are limitless. So I give this an 8.
It would be nice to see some 'Laboratory' equipment rather then Construction stuff. But, if you say it's a 'Secret Laboratory' then I believe you and I like your photo and the quality of it: 8
lol, come on, are you kidding?? that does not look as a chemistry lab....I will give you a 6 just for the mood you have created with the desat and duotone.