2a, 3a-epithio-17a-methyletioallocholanol, will it show up as anything on a hair follicle drug test?

Maybe. Drug testing for pro (steroid) hormones is getting increasingly sophisticated. But the side effects of using spawn and its relatives are dire. The best advice i could give anyone using it is "don't". I hope you ask having stopped, if you have been using it. If you haven't please don't take offense at my concern.