Oh, definitely. I'm just saying listing the steps in the diagnosis isn't, in and of itself, convincing, since most of them aren't actually that hard (and like carbocation says, you end up doing most of them in a college bio class), so at least figuring out that you have a staph infection isn't completely implausible (though like I said, the "MR" part of MRSA is probably harder).

It's still unlikely, though, firstly because PCR is hard, and secondly, because what person willing to go to that much effort wouldn't just go to the doctor?