steroids screw up bloodwork, well, the bone marrow and blood production as an outcome, tend to wash out certain micro-elements and alter the liver function. So I would guess that self administered steroids with no M.D. looking after the blood formula something may stick out of the norm at the medicals and may incline the doctor to do further tests. I have taken lots of steroids for my condition for prolonged period of time, and I can tell first hand that the damage they cause is lasting, extensive and proliferating with time. My advice is, do a full blood workup, a urine test with your GP before going any further.