As any severely food allergic patients know, when suffering from a potentially life-threatening anaphylactic reaction, they need to jab an epinephrine needle into the side of their thigh... But... why the thigh? Why not the arm like most other shots? Per AAAAI , there have been 3 anatomic sites investigated to determine which location offers the fastest systemic absorption of epinephrine when injected intramuscularly and/or subcutaneously. Intramuscular injection in the upper arm (delto…