Ya for some reason i always thought it was b12. My friend had a test and he did the dilution and said he took a ton of b12 vitamins and his pee actually didn't turn yellow.
But the subbing sounds suprisingly easy, I think I'll just do that, seems like a TON of less work and risk. Basically just have my friend pee in a cup for me, put it in the microwave for 10 seconds, and than go to the testing place and dump it out? That's pretty simple! How long after my friend gives me the urine should I nuke it? I should probably do this all only a few minutes before I leave for the testing don't you think, because my friend said she had to wait a good 45 minutes before being let to pee