So a little update - I did one more morning drug test using first check, where I intentionally tried to dehydrate myself the day before. So the sample was a DARK yellow.

Non-midstream, came back "borderline positive", with a faint vertical bar on the right side of the test band, and nothing on the left.

I don't start my job (which I'm not sure will even test me) until at least the 14th. They want me to start work ASAP, so I don't want to piss them off by delaying and delaying.

As long as I stay hydrated, and with the gap of time in between, am I OK? Unfortunately I don't have the money to buy another test, although I did order 10 strips from amazon.com that should arrive when I get down there.

Also, to clarify, the single test band had no color on the left side, but a faint color on the right - i.e. a broken line (more like a 1/4 of a broken line, but still). It wasn't a completely faint line. Does this change anything?