Looking into get or putting together a medical bag for the common (not an EMT) person to render aid in case of a natural or manmade disaster. Question one: does anything in a premade medical bag have a shelf life (things that will go out of date) and is there a date on it as to say how old it is before buying it. Two: would it be better to build my own; are there things that I can do better? Wanna kill these ads? We can help!