Hallucinogenic mushrooms detectable in your system?

Technically, yes, every and any drug is detectable, but the fact that hallucinogenic mushrooms have such a short period in your urine(3 days i believe) and very very few people use hallucinogenic mushrooms on a daily(or weekly) basis like other street drugs, it's not viable for drug testing labs to test for hallucinogenic mushrooms and I've never heard of anyone ever testing for them.