Quote Originally Posted by evilhyde
Been trying to drink more water and such
That won't help, you can't flush it out.

and will drink a lot in the early morning and take some B12.
Don't drink a lot of anything that morning. You're already negative, just drink a cup of coffee or two and make sure to pee a couple of times before testing. If you don't trust the home test, you can always do as I did when I used to dilute. Just plop down $25 bucks or so and pay for your own lab test, in my case... just a THC check. You'll know for 100% certain then if you are skeptical. You have every right to pay for one and labs will gladly take your money Over and over. The results are between you and God, no one can share the results in other words. BTW you'd want B2, not 12. Good luck.