if it fades it just means thats the dye in that part of test is taking longer to travel along iv had it with cheapies the superdrug tests have vertical lines for both boxes one for test one for control, now if u get a vertical line in the test but not control it means the test did not work prob and ignore it test again and if u get a horizontal line in the test box i would wait a bit longer as it should eventually go and leave a vertical line if preg or blank box, hope this helps xxxxx