Intradermal administration refers to which of the following?

Intradermal administration involves the delivery of medication directly into the dermis, which is the layer of skin located just beneath the epidermis. This method is commonly used for allergy tests and tuberculosis screening, as the delivery of the substance into the skin allows for the assessment of local tissue reactions.

The dermis is richly supplied with blood vessels and nerve endings, which facilitates the rapid absorption of the drug while also allowing for a controlled response. This technique is distinct from other forms of administration such as intramuscular (which delivers medication into the muscle), subcutaneous (which administers medication under the skin), or intravenous (which delivers medication directly into the bloodstream).

By using the intradermal route, healthcare providers can achieve precise localization of medication effects, making it a valuable technique in clinical practice.