What size needle is used for subcutaneous injections?

What size needle is used for subcutaneous injections?

• A. 5/8 inch, 23-25 gauge
• B. 1/2 inch, 28 gauge
• C. 2 inch, 22 gauge
• D. 5/8 inch, 23-25 gauge

Answer: (D)

Subcutaneous injections are meant to deliver medicine into the fatty tissue just under the skin, not into muscle. To consistently reach that layer in most adults, a short needle is used. A length of 5/8 inch (about 0.625 inch) is long enough to reach the subcutaneous tissue but short enough to avoid hitting muscle in typical patients. The 23–25 gauge range provides a balance between a smooth, comfortable penetration and durability of the needle, allowing the medication to flow easily without excessive tissue trauma. Longer needles increase the risk of intramuscular injection, while shorter or thinner gauges can make injections harder or more painful for some meds. So, 5/8 inch with 23–25 gauge is the standard combination for subcutaneous injections.

Subcutaneous injections are meant to deliver medicine into the fatty tissue just under the skin, not into muscle. To consistently reach that layer in most adults, a short needle is used. A length of 5/8 inch (about 0.625 inch) is long enough to reach the subcutaneous tissue but short enough to avoid hitting muscle in typical patients. The 23–25 gauge range provides a balance between a smooth, comfortable penetration and durability of the needle, allowing the medication to flow easily without excessive tissue trauma. Longer needles increase the risk of intramuscular injection, while shorter or thinner gauges can make injections harder or more painful for some meds. So, 5/8 inch with 23–25 gauge is the standard combination for subcutaneous injections.