Is anyone aware of any evidence based or national standards as to the frequency of blood cultures? We culture every 24 hours for a temp greater than 101.5, but as far as I can find out there is no evidence for this. Some of our patients end up cultured many many times, which is hard on the patients and expensive. I'm bringing it up with our docs and the ID docs but so far no one wants to take a stand and write a policy. Help us!!!