I learned an important lesson today. I have always felt that the possibility of hitting a vein with a 23 g needle in your glute is slim, and that aspirating to ensure you're not hitting a vein is not really needed. I still do it, but more as a formality. This morning, as I went to pin, I pulled back on the syringe and there was blood returning. I was not expecting that went a little deeper, and nothing. Back to where it was comfortable and more blood. I removed the pin and went to a different spot. The moral is had I not pulled back on the syringe, I would have put 1.6 ml of test and deca to the dome and would be dealing with an oil embolus. Kind of freaked me out. Anyway, Im sure most of you do it every time, but if you're not aspirating every time, then I just thought I would share.