User blog comment:Bluegear93/Medi-gel on the Heretic Station?/@comment-730941-20101003233436

The only possible reason I can think of to have medi-gel on board is if the geth were using organic cannon fodder (Husks, etc) and needed to patch them up. That, or perhaps it's also useful in closing over wounds in synthetic as well as organic tissue. Both those reasons are a bit shaky, though.

Other than that there's no reason I can think of to have it there, so I think we can conclude that (much like the thermal clips on Aeia) medi-gel exists for gameplay purposes only.