We have a Joint Commission visit coming any day now. Apparently this is a big focus area this year for TJC. We are being told that any medications drawn up in the OR need to be used or discarded within 1 hour. They are citing USP 797 as the source of this requirement. Is anyone else doing this? I've read over USP 797 and it seems like they may be correct. There is a section that discusses anything drawn up outside of a clean room environment should be used within an hour. I'd appreciate some input on this.