Eyes: Administration directly onto the surface of the eye; used exclusively for primary irritation data; see Ocular
Intraarterial: Administration into the artery
Intraaural: Administration into the ear
Intracerebral:Administration into the cerebrum
Intracervical: Administration into the cervix
Intradermal: Administration within the dermis by hypodermic needle
Intraduodenal: Administration into the duodenum
Inhalation: Inhalation in chamber, by cannulation, or through mask
Implant: Placed surgically within the body
Intramuscular: Administration into the muscle by hypodermic needle
Intraneural: Administration into the neural pathways by modulator-demodulator
Intraplacental: Administration into the placenta
Intrapleural: Administration into the pleural cavity by hypodermic needle
Intraperitoneal: Administration into the peritoneal cavity
Intrarenal: Administration into the kidney
Intraspinal: Administration into the spinal canal
Intratesticular: Administration into the testes
Intratracheal: Administration into the trachea
Intravaginal: Administration into the vagina
Intravenous: Administration directly into the vein by hypodermic needle
Multiple: Administration by more than one route
Ocular: Administration directly onto the surface of the eye or into the conjunctival sac; use exclusively for systematic toxicity data; see Eyes
Oral: Intragastric, feeding, or introduction with drinking water
Parenteral:Administration into the body through the skin
Rectal: Administration into the rectum or colon in the form of enema or suppository
Skin: Application directly onto the skin, either intact or abraded; used for both systematic toxicity and primary irritant effects
Subcutaneous: Administration under the skin
Unforgivable: Administration by whatever means of toxic substances to helpless animals
