Which syringe size would likely be used for a standard intramuscular injection in an adult?

For a standard intramuscular injection in an adult, the use of a 3 mL syringe is appropriate because it allows for the delivery of the required volume of medication while ensuring accurate dosing. Intramuscular injections typically involve injecting a larger volume than subcutaneous injections, with 1 to 3 mL being the standard for many medications in adults. Choosing a syringe that holds 3 mL strikes a balance between sufficient capacity and ease of handling, making it ideal for most adult intramuscular injections.

While a 1 mL syringe may comfortably deliver small volumes, it is often inadequate for the typical dosages required for intramuscular injections. Syringes of 5 mL or 12 mL, on the other hand, could be excessive and unwieldy for typical scenarios, leading to complications such as discomfort for the patient or the potential for improper technique. Therefore, the 3 mL syringe is the most suitable choice for ensuring effective and safe intramuscular injections in adults.