I talked to a pharmacist who told me that one-inch needles are fine for IM injections. I have my doubts because I'm injecting in the hip (thicker layer of fat than in, say, an arm), but I'll give it a try. But next time, I'm checking those needles myself instead of trusting someone else to. I check my own T, so I don't know why I took someone else's word for the needles.