Job shadow/ interview attire?

I have a formal interview after job shadowing for an endoscopy position tomorrow. What is appropriate to wear? Scrubs? Dress/Interview clothes? I figure I can be safe with scrubs but is the wrong thought to have?

Thanks for your opinion in advance.
My advice is to wear business wear. Dress pants, blouse and jacket or dress pants and a nice shirt or blouse. It is better to be over dressed than under dressed in an interview situation. Really, even though it is a position in which scrubs are worn, I think they would be inappropriate for an interview.