Sub-Q is the abbreviation for which route of administration?

• A. Intramuscular
• B. Oral
• C. Inhalation
• D. Subcutaneous

Answer: (D)

Recognizing abbreviations for routes of administration, Sub-Q specifically means subcutaneous. This route involves injecting into the tissue just beneath the skin, where absorption tends to be slower and more prolonged because the subcutaneous tissue has fewer blood vessels than muscle. It’s chosen when a medication needs steady, gradual uptake, such as insulin or certain anticoagulants. This differs from intramuscular injections, which go into muscle and absorb more quickly due to higher blood flow; oral administration, which requires passing through the digestive system; and inhalation, which delivers a drug into the lungs for rapid entry into the bloodstream or direct local effect.