Youre worrying too much about faint lines when there really is no need to worry.
There is no meaning attributed to the intensity or width of the line. A line in the "T" region (drug), even a faint one, is a negative.

Also, the vitamin to use to color your urine is B2 (Riboflavin), not B12 (see the Dilution sticky). Keep in mind though that color is the least aspect in determining an overly diluted sample. Even samples with a nice yellow color to them can still fall below the acceptable limits for creatinine and specific gravity, and thus being ruled "too-dilute".
Burnt Toast Reviewed by Burnt Toast on . Dilution Log - Likely court test -Perosnal log for informational purposes only. I will follow Dilution technique as precicesly as possible. I had purchased many single use drug tests on line but do not know if they work.. No matter what i do i get a good control line, and very faint drug line. -I will not rely on these drug tests and will just hope for the best. I have passed many many drug tests using substitution and dilution in the past, but havent been tested in several months so I am a tad worried and this log will Rating: 5