difference between infusion and injection
Injection and infusion are both introduction of something into the body , usually in a solution form. The time taken differentiates the two. If the process takes less than 15 minutes, it is injection. If it takes more than 15 minutes, infusion. (CMS 2007)
3. the slow therapeutic introduction of fluid other than blood into a vein. See also intravenous infusion. note: An infusion flows in by gravity, an injection is forced in by a syringe, an instillation is dropped in, an insufflation is blown in, and an infection slips in unnoticed.