In toxicology, the main types of injections include:
Intravenous (IV): Directly into the bloodstream, offering the fastest systemic distribution. Intramuscular (IM): Into the muscle tissue, providing a slower absorption compared to IV. Subcutaneous (SC): Just under the skin, used for slower, sustained release. Intradermal: Into the dermis layer of the skin, often used for allergy tests and vaccinations.
