Abstract: A content-coded syringe for medical use includes a generally tubular body and a plunger slidably disposed in the body. A content code corresponding to a syringe content type to be introduced into the syringe is permanently and directly formed on the body or the plunger or both. It is selected from a set of content codes used on other syringes of like design that are adapted to receive other syringe content types. A set of such syringes with unique content codes can thus be used in a medical procedure to uniquely identify the syringe contents and thereby minimize syringe misidentification.