Would taking any AI pop positive in a urinalysis drug test?
Unlikely. Who's testing you?
While it's banned under WADA and there are tell-tale metabolite peaks that are identifiable under mass spec (as is hte case w/ letro), I've never read of anyone testing positive. To me that suggests that it probably isn't being looked for, perhaps due to practical reasons.
Short half-life, too (~2 days) so it should be completely gone from your system in under two weeks.