I was working a per diem hospital job with a CACI and they have a BUD of 4h from the time of preparation if made inside the caci. USP 797 had an update in 2022? (I graduated 2017) that said immediate use is good for 4 hours as opposed to 1 hour that I learned? My current workplace has 0 quality control, no clean room, no IV room, no MFRs. So if we are using vial mate or occasional compounding for immediate use if vial mate is not an option, then what would be the mandated BUD? Or does it vary from state to state? I heard California is sticking with 1 hour bud? Does anyone have the updated literature or guidance as to when the changes happened? Tia!