Question 4Which of the following needle sizes should a medical assistant select for an…

➤ How do I choose the correct needle length for an IM injection?
Select needle length by patient age, body habitus, and injection site. Adults typically need 1 to 1.5 inch needles for deltoid or ventrogluteal IM injections. Use 5/8 to 1 inch for small children and up to 1.5 inches or longer for obese patients. Ensure the tip reaches muscle tissue, not subcutaneous fat.