Drinking tons of water sever days before will not help. drinking tons of water the day of the tests is a better idea. Wait until you get closer to the test to start drinking water. Yes you passed the at home test because of dilution. but thats good. Do exactly what you did for the home test for the real one. GO TO THE DILUTION STICKY. Best info anyone can get. but stop DRINKING NOW. relax, start dinking early monday morning or just 3-4 hours before the tset.