I would say that is a negative.. even the faintest of line is supposed to indicate a negative result.

After 50 days I'd say you're probably safe without a dilution
BobBong Reviewed by BobBong on . Test on Monday I'm 50 days clean (145lbs, 5'7", 49 years old and daily smoker) and have a test on Monday. Attached are photos of my first void (no dilution) and although it is tough to see in the photos (difficult to get good photos) there are distinctive faint lines which I would judge to be negative results. I have been practicing the correct dilution method for the last month or so and have always gotten these same faint lines but negative none the less (I wonder if it's just the test strips I have since Rating: 5