Check out the difference between these two dip sticks. Background: Chronic/heavy smoker, clean for 21 days. My test is in 4 days, so I'll be clean for 25 days. Height 6'3, weight 270 (pretty fat). Easy@Home Test: Extremely faint line (not even visible on the photo). $9 from Amazon for 15 tests ($0.60 a test) First Check Test: Clearly visible line, almost as strong as the control. $13 from CVS for a single test Both tests are advertised as 50 ng cutoff level. Both tests were taken from the same heavily diluted sample (I drank about 1.2 gallons over 3 hours) What do you make of this? Do you think I can pass in 4 days (with dilution), after being clean for 25 days? Not sure which one to trust.