Aspirin is an old way to foil an old test...

Drinking water in the days before the test does not help. Detox drinks do not help (they are an expensive form of dilution - like for the day of the test).

10 times normal dose of VitaminB complex? That sounds like a lot. My Vitamin B Complex has 20 mg B2 (Riboflavin), and I took 2, which was plenty to color my clear urine a nice vitamin yellow.

What kind of test are you going to take? When did you take your hometest, after how much dilution?