Under what conditions can unopened, unused Curosurf (poractant alfa) vials be returned to refrigerated storage after warming to room temperature?

Unopened, unused Curosurf (poractant alfa) vials warmed to room temperature may be returned within 24 hours to refrigerated storage at 2–8°C in the original package to protect from light, but this warming-and-return cycle must occur no more than once.