yeah the the walgreen test (with the Green package and black lettering) gives pretty week Test band (the second srtip under control stripp)...But i also realized dilution reduces the intensity of the color...try with ur first piss of the day to get a true indication.did some research Dilution reduces color because there are certain natural "stuff" in ur piss that react with the strip to give it the pink color..Thc metaboilites prevent that "stuff" in your piss from reacting with Test strip( i know very ruff explanation but justified with lazyness) hence dilution reduces the "stuff" and thc metabolites....."First CHECK" brand which i found at my local "rite aid" has more more intense negative when compared with the "at home test" from walgreens