Which abbreviation is used for the subcutaneous route?

• A. s.l.
• B. s.c.
• C. sig.
• D. s.o.s

Answer: (B)

Knowing route abbreviations helps ensure medicines are given correctly. Subcutaneous administration means injecting into the tissue beneath the skin, yielding slower, gradual absorption. The standard abbreviation for this route is s.c. with periods. The other options correspond to different things: s.l. stands for sublingual (under the tongue), sig. indicates instructions for use, and s.o.s. refers to an emergency directive. Therefore, s.c. is the abbreviation used for the subcutaneous route.