Quote Originally Posted by Burnt Toast
Skip the aspirin step because it is old tech. Back in the day, it was used as an interferant for only one type of test: the first-generation EMIT screen. Since then, a second-gen EMIT (aka EMIT II) was introduced to counter the interference issues caused by aspirin. As a result, the first-gen EMIT is seldom used anymore (if, at all).

The proper vitamin to use for urine color is B2 (Riboflavin). But keep in mind that creatinine and specific gravity checks have become SOP in recent years, making sample color the least aspect in determining an overly diluted sample. Even samples with a nice yellow color to them can still fall below acceptable limits for creatinine and SG, thus resulting in a "too-dilute" ruling.
Thank you very much for the aspirin advice, I won't use it.

Should I get an exclusive B2 product or will the B-Complex work fine? If so, how much B2 would you think?


I'll update with my hometest after I take it tomorrow morning. But if it would be negative, should I still prepare? The test goes for 50 ng. But I know some labs test stricter than that