What is the recommended angle for performing a subcutaneous injection?

The recommended angle for performing a subcutaneous injection is 45 degrees. This angle helps to ensure that the needle enters the subcutaneous layer of tissue effectively while minimizing the risk of hitting a muscle or causing discomfort to the patient. Subcutaneous injections are typically administered in areas with adequate fat tissue, such as the abdomen or the outer upper arm, where the needle can penetrate the skin and reach the subcutaneous layer without going too deep.

Injecting at this angle allows for the proper delivery of medications that are designed to be absorbed slowly, which is characteristic of many vaccinations and insulin injections. Selecting the correct angle is crucial for the efficacy of the injection and the comfort of the patient.

While 90 degrees may be appropriate for intramuscular injections, it is not suitable for subcutaneous administration, as it could lead to injecting the medication into the muscle rather than the intended subcutaneous space. Angles such as 30 degrees or 15 degrees are not commonly recommended for subcutaneous injections either, as they do not align properly with the layer of fat where the medication is meant to be delivered. The 45-degree angle strikes a balance, ensuring that the injection is both effective and safe.