On a recent doctor visit I requested my 10yr tetnus shot. Jokingly, I told the nurse "Dont forget to Aspirate". She looked at me and said they don't do that anymore in the medical field... I dont quite understand why they wouldn't aspirate on an IM shot??? She sad something like its not neccessary anymore... Im not in the medical field but from what iv'e learned is that it is neccessary due to the chance if hitting a vein. Does anyone have any input on this? On a side note she drew with a 25 and didnt change the tip before pinning me!!! LOL, for how much medical insurance is, and the co-pays, u think they would at least give ya a fresh pin. But like i said if anyone in the medical field can enlighten me on not aspirating feel free to comment. Sorry for the spelling.