At what angle should a needle be inserted during a subcutaneous injection?

A subcutaneous injection is typically administered at a 45-degree angle to the skin. This angle allows for the appropriate penetration of the needle into the subcutaneous tissue, which is the fatty layer just beneath the skin, ensuring that the medication is delivered correctly and absorbed effectively.

When injecting at a 45-degree angle, the needle can enter smoothly without risking injury to the underlying muscles or blood vessels. This technique is commonly taught in immunization training and is essential for the safe administration of vaccines and other medications that require subcutaneous delivery.

The other angles, such as 30 degrees, are often used for intradermal injections, while 60 degrees and 90 degrees are more appropriate for intramuscular injections. Thus, the 45-degree angle is the standard practice for subcutaneous injections to maximize efficacy and minimize complications.