What is the difference between intramuscular and subcutaneous injections?

different parts.

Subcutaneous injection is the injection of liquid medicine into the subcutaneous tissue, like vaccination is subcutaneous injection.

Intramuscular injection, in addition to skin test, vaccination, general drugs, must be absorbed quickly, or we require that the drug cannot be absorbed quickly, because rapid absorption will have adverse effects, usually intramuscular injection.

Human tissue, from the outside to the inside, is the epidermis, dermis, subcutaneous tissue, and muscle. Intradermal injection is to inject the liquid medicine between the epidermis and dermis, like penicillin skin test, it is an intradermal needle, so the absorption is relatively slow, even if allergies are detected in time.

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