guys, i did a search but not any help. what size needles do i need with test? i use 23g in my hip and triceps. is this ok? one more thing, some of the test leaks back out when i pull the needle out, why? thanks for any help!
get some 25g pins if you can... im a beginner but i prefer 25g when i inject quads than 23g because i guess it means less scar tissue. i purchased both types at first cause i didnt know which to use, but it turns out im only using the 23s to pull oil out of the vial (and to inject glutes but I only did that once... too hard to self-administer compared to the quads)