A subcutaneous injection should be given at an angle of

A subcutaneous injection should be given at an angle of

• A. 45-90 degrees
• B. 30-90 degrees
• C. 60-90 degrees
• D. 50-90 degrees

Answer: (A)

Subcutaneous injections must deposit medication into the fatty tissue just beneath the skin, not into muscle or the dermis. The angle you use is chosen to land in that layer based on how thick the subcutaneous tissue is and what needle length you’re using. If the person is thin with little fatty tissue or you’re using a short needle, a shallower angle like about 45 degrees helps keep the shot in the subcutaneous layer. If there’s more fatty tissue or you’re using a longer needle, you can insert more steeply, up to about 90 degrees, to ensure the injection reaches the subcutaneous tissue. Angles much shallower than 45 degrees risk staying in the dermis, while forcing a very steep angle without regard to tissue depth can risk hitting muscle. That’s why the practical range is 45 to 90 degrees.

Subcutaneous injections must deposit medication into the fatty tissue just beneath the skin, not into muscle or the dermis. The angle you use is chosen to land in that layer based on how thick the subcutaneous tissue is and what needle length you’re using. If the person is thin with little fatty tissue or you’re using a short needle, a shallower angle like about 45 degrees helps keep the shot in the subcutaneous layer. If there’s more fatty tissue or you’re using a longer needle, you can insert more steeply, up to about 90 degrees, to ensure the injection reaches the subcutaneous tissue. Angles much shallower than 45 degrees risk staying in the dermis, while forcing a very steep angle without regard to tissue depth can risk hitting muscle. That’s why the practical range is 45 to 90 degrees.