How do doctors know how deep to inject a syringe exactly

Question

Since everyone’s body is different and we all have different sizes in muscle, fat, bones and even blood vessels and the location of those could vary slightly from person to person, how do doctors know exactly how deep to inject a syringe.

In: Biology

Answer 1

. Injections are given with different length needles. Intermuscular and subcutaneous. For an inter muscular injection, the injection should go in 1 inch. If the patient is thin, we just don’t put it in as far. We want it in the muscle and sometimes we have to squeeze or pinch up the muscle gently to have enough tissue. Subcutaneous injections only go in a few millimeters and we can also pinch up then if needed.