Refrigerated multi-dose insulin vials remain sterile through 6 months of use.
A S BergM E JacobL B MamoD H PlutaKatharine F LunnPublished in: The Journal of small animal practice (2023)
Refrigerated phenol- and metacresol-containing multi-dose insulin products carry minimal risk for iatrogenic infection through 6 months of use, regardless of alcohol swab preparation.