A pharmacy technician should identify that medication absorbed through the skin via a patch is using which of the following administration routes?

Topical administration refers to the application of medication directly to a localized area of the skin or mucous membranes for localized effect, rather than systemic absorption. While patches may have some topical properties, their primary function is systemic, distinguishing transdermal from topical routes.

Sublingual administration involves placing medication under the tongue for rapid absorption into the bloodstream through the mucosal membrane. This route bypasses the digestive system entirely, which is different from the transdermal route, where the medication is absorbed through the skin.

Buccal administration is similar to sublingual, involving placing medication between the gum and the inner lining of the cheek for systemic absorption. Despite both routes providing quick delivery into the bloodstream, they differ fundamentally from transdermal administration, which specifically uses the skin as the absorption site.