I use a 1.5 inch 25 gague needle for my quads and I just finished putting about 2.5 cc's into it. My question was that I put the needle in probably 1.2 inches instead of 1.4 like in the glutes and so the needle can move around sometimes during the long wait of putting 2.5cc through a 25. I ended up aspirating towards the end and saw some blood. Since there was just a little more juice left, I said just f-it and injected it back in. I didn't notice anything different but I am just wondering if in the future I should not do that and why one aspiration would come with air and the next one has blood in almost the same location?