A kit to facilitate creation of and compliance with a personalized injection site rotation plan includes a plurality of disposable injection devices adapted for giving an injection of a medication to a patient in need thereof, each disposable injection device having a permanent, distinctive mark that may be the same as or different from the distinctive mark on other disposable injection devices in the kit； and a plurality of user-defined association tools, wherein for each unique distinctive mark on a disposable injection device, at least one user-defined association tool has a distinctive mark that corresponds to the unique distinctive mark.
