Where are subcutaneous injections administered?

Subcutaneous injections are administered under the skin, specifically in the fatty tissue just beneath the dermis and epidermis layers. This method allows for the slow absorption of medication into the bloodstream, making it effective for certain medications that need to be released gradually. Common sites for subcutaneous injections include the outer upper arms, abdomen, and thighs. This technique is preferred for various vaccines and medications because it is relatively easy to perform and generally less painful compared to intramuscular or intravenous injections.

While there are other injection methods such as intramuscular and intravenous, which involve different anatomical locations, the defining characteristic of subcutaneous injections is that they are delivered specifically in the subcutaneous layer, targeting the fatty tissue for effective absorption.