What does the abbreviation "SQ" stand for in medical terms?

The abbreviation "SQ" stands for "subcutaneous," which refers to a location just under the skin. In medical procedures or injections, substances administered subcutaneously are delivered into the layer of fat and tissue that lies between the skin and the muscles. This method is commonly used for various injections, such as insulin or vaccines, as it allows for slower absorption into the bloodstream compared to intramuscular or intravenous routes. Understanding the various routes of administration is crucial in medical practice, as each route has specific implications for how quickly and effectively a medication works.