Generally no one tests for steroids unless it they are an organization that spefically looks for them like sports organiznations(college, pro, Olympics) and maybe law enforcement and military with probably cause. The test for steroids is more expensive the one for regular recreational drugs and coupled with the fact of all the illegal drug users in the US, steroid users are a small minority, most don't test don't test steroids.
So you should be fine but like the others said they'll notice your high blood pressure. That may or may not be a problem.