Just FYI in order to test for a drug, they have to test for a specific compound... They'd basically be shooting in the dark. And for lots of blood testing, in general, they can only test for what sort of "results" a compound yields... sort of like your testosterone levels may be very high which might INDICATE you may be using AAS, but it doesn't necessarily mean you are. (I'm sure there are much better examples, just trying to relate it to your specific situation) So unless the specific things you are putting in your body contain THC, cocaine, PCP etc. (which is what places of employment test for) I don't think you have anything to worry about.