For the Record

The Galley has had its Med-Kits accessed three times, and the Cargo Hold and Drilling Rig have had theirs used twice each. The Engine Room has had its Med-Kits used only once, and the Med-Kits in the Caves (assuming there are any) have never been touched; those two are now the only eligible locations.

You may notice that there have only been four med-kit rolls, but let's not forget that in the first alien attack, the med-kits at every Location except the Caves were opened and used.