Prepped for Test, it was cancelled until tomorrow, need some advice

[lm38654]

The proper vitamin for urine 'color' is B2 (Riboflavin). But it must be understood that with creatinine and S/G checks being lab SOP in recent years, color became the least aspect in determining an overdiluted urine sample. Even samples with a nice yellow color to them can still be ruled "diluted" due to unsatisfactory S/G and creatinine levels.

First, thank you so much for your advice. I'm learning quite a bit here!

Next - I know someone that works at this company and he says it's an "instant" test - haven't had time to google that yet, but just wondering if you or any other experts here would know if that makes a difference. My thinking is, does "instant" mean that there isn't any creatinine testing going on? (complete newb here when it come to this)

Thanks!