Which type of injection is given under the skin using the "tenting" method?

The type of injection given under the skin using the "tenting" method is subcutaneous injection. This technique involves lifting or "tensing" a fold of skin to create a small pocket between the skin and the underlying tissue. The needle is then inserted into this pocket, allowing for the medication to be administered directly into the subcutaneous layer, where it can be absorbed into the bloodstream over time.

Subcutaneous injections are commonly used for vaccines and certain types of medications because they are relatively easy to administer and result in slower absorption compared to injections into muscle or veins. This slower absorption can be advantageous for medications that are intended to have a prolonged effect.

The other types of injections, such as intravenous and intramuscular, utilize different administration techniques and target different tissue areas. Intravenous injections involve delivering substances directly into the bloodstream through a vein, while intramuscular injections are delivered deep into muscle tissue. Intradermal injections are placed just below the skin's surface, used mainly for allergy tests and vaccines, and typically do not involve the tenting technique used in subcutaneous injections.