ROA - TripSit wiki
https://wiki.tripsit.me/wiki/ROAThis ROA Common abbreviation for Route Of Administration, used to describe the various different methods of ingesting drugs, including oral, insufflation, sublingual/buccal, rectal, vaginal, intramuscular (IM) and intravenous (IV) injection. is the most rapid, effective, and dangerous. The most popular injection routes are: