A rule of thumb (I gleaned this from a friend) for determining someones true age is to listen to them talk: If they talk about the past, about all the things that happened and that they did, theyve gotten old
Their actual concentrations are often different from the label, and some may even contain contaminants
Subcutaneous injection is the most common method
Krakow D, Robertson SP, King LM, Morgan T, Sebald ET, Bertolotto C, Wachsmann-Hogiu S, Acuna D, Shapiro SS, Takafuta T, Aftimos S, Kim CA, Firth H, Steiner CE, Cormier-Daire V, Superti-Furga A, Bonafe L, Graham JM Jr, Grix A, Bacino CA, Allanson J, Bialer MG, Lachman RS, Rimoin DL, Cohn DH
M., Heffernan, M
They're also coloured purple so you can clearly differentiate between them and other types of syringes