Even though mold levels were shown to be low, I'm still convinced that we were exposed to higher levels of mold months ago and that was the beginning of our symptoms. Now, we're dealing with the fallout. There was a leak in the ceiling a month or so before we all became ill. It was never fixed and the water damage was in the workspace for quite some time. It's hard to verify, but it is really the only thing that fits with all our symptoms and timing.