What does intracutaneous mean in the context of injections?

What does intracutaneous mean in the context of injections?

• A. Intracutaneous means into a vein.
• B. Intracutaneous means into a muscle.
• C. Intracutaneous means into subcutaneous fat.
• D. Intracutaneous means into the skin (dermis) layer of tissue.

Answer: (C)

Intracutaneous means into the skin itself, specifically the dermal layer just beneath the epidermis. Injections placed here are shallow and target the skin’s immune-rich area, which is why intradermal tests (like TB or allergy tests) use very small volumes and short, fine needles. This is different from injections into subcutaneous fat (the fatty layer beneath the dermis), which require a different angle and needle length, and from intramuscular injections into muscle or intravenous injections into a vein. So, intracutaneous = into the skin, within the dermal layer.

Intracutaneous means into the skin itself, specifically the dermal layer just beneath the epidermis. Injections placed here are shallow and target the skin’s immune-rich area, which is why intradermal tests (like TB or allergy tests) use very small volumes and short, fine needles. This is different from injections into subcutaneous fat (the fatty layer beneath the dermis), which require a different angle and needle length, and from intramuscular injections into muscle or intravenous injections into a vein. So, intracutaneous = into the skin, within the dermal layer.