Apparatus and method for injecting fluid into a subject includes a fluid injecting portable communication device case. The fluid injecting portable communication device case has a communication device portion. The communication device portion has a device recess that is configured to removably hold at least a portion of a portable communication device therein. A fluid injection portion has at least two fluid injection stations. Each fluid injection station is configured to interact with a fluid injector assembly, a removable trigger block, and a removable needle cover. Each fluid injector assembly includes a trigger, a firing mechanism, a plunger, and a needle.