Labcorp and Quick Fix4.0

Hello yall, I recently purchased QuickFix4.0 to carry crotched on me everyday when i goto work(FORTUNE 500 COMPANY) for random drug testing, on randoms they pull you out your office/desk bring you downstairs and boom you take your random and its done through LABCORP and they send it to the labs, will one bottle of Quick Fix be enough cause numerous threads throughout numerious boards make you retake a piss test cause its not filled to the line

my main question is do i need to purchase a 2nd bottle of quick fix so i can fill the required line and avoid taking a 2nd test?