Missing a test may not be in the same league as failing a test, of course, but habitually missing them obviously raises flags. The same with an athlete who habitually uses the one hour window to alert the testers they will not be available, such occasions will of course arise but multiple times leads to greater targeting of that individual as it also raises flags. Armistead cocked up and should have known better, assuming she has nothing to hide of course, and in fact the move to 3 misses in 12 months from the previous 18 months only works in the athletes favour.