could second hand smoke affect my test?

[Chowwww]

You cannot test positive on the basis of secondhand smoke.



There is no meaning attributed to the intensity of a line. Even synthetic urine controls (which contain no drug metabolites at all) can register a faint line on an assay.

Its still a negative. A negative is a negative.

Thanks for your reply, I hope it is a negative I've been looking up all day since the test and have not seen a test that shows a line as faint as my one, its almost invisible so just to be sure I've ordered some more tests and will half- dilute and see how that test comes out