In the instructions for the tests I have it states -

"Note: There is no meaning attributed to line color intensity or width."

You could always claim there were some people smoking near you while you were at a concert if questioned.
proletarian Reviewed by proletarian on . Advise needed! I was told by my work that my annual drug test will be taking place sooner than expected due to the client changing their rule. I work internationally on a 28 day on/28 day off basis, so I only smoke when I am back home for the month im off. I smoke everyday when im off at least a 3-4 times a day but only about 5-10grams in the 28 days im off. I am currently away and have been for 2 weeks so not smoked in 15days and still have another 15 to go before my test. While I was home this time round, Rating: 5