What does the abbreviation SQ stand for?

The abbreviation SQ stands for "subcutaneously," which refers to the administration of medications or fluids beneath the skin. This route is commonly used in veterinary medicine for various treatments, including vaccines, fluids, and medications, as it allows for quick absorption into the bloodstream while being less invasive than intravenous injections. Using subcutaneous administration is particularly beneficial in situations where oral administration is not feasible or when a slower release of medication is desired.

The other options provided do not accurately represent this commonly used veterinary term. While "substantial quantity," "specific quantity," and "standard quality" may be relevant in certain contexts, they do not pertain to the method of drug administration in animal care. Thus, selecting "subcutaneously" conveys the appropriate meaning in a veterinary context.