7 places that forensic scientists look to find drugs in the body. Oral<unk>  of a liquid. A<unk>  in pharmacology and toxicology is the way by which a drug, fluid, poison, or other substance is taken into the body.<unk>  are generally classified by the location at which the substance is applied. Common examples include oral and intravenous<unk> .<unk> s can also be classified based on where the target of action is. Action may be topical (local), enteral (system-wide effect, but delivered through the gastrointestinal tract), or parenteral (systemic action, but delivered by<unk> s other than the GI tract).<unk>  and dosage form are aspects of drug delivery.
Route of administration
Rate of infusion
Physiological effects in space
Frequency following response
Position 
Killing Season
Dose profile
Biological half-life