This article needs attention from an expert on the subject. Please add a reason or a talk parameter to this template to explain the issue with the article. Consider associating this request with a WikiProject.(January 2012)
Toxicology testing, also known as safety testing, or toxicity testing, is conducted to determine the degree to which a substance can damage a living or non-living organisms. It is often conducted by researchers to comply with governing regulations. Some toxicology testing is chemical testing while some others use animals in the laboratory studies. Contract animal testing facilities such as Huntingdon Life Sciences and Inveresk Research International conduct a variety of tests on behalf of customers, including the manufacturer of medicines and household products.
The tests are conducted without anesthesia, since drugs can change test results.[not in citation given] The tests examine finished products such as pesticides, medications, food additives such as artificial sweeteners, packing materials, and air freshener, or their chemical ingredients. The substances are applied to the skin or eyes; injected intravenously, intramuscularly, or subcutaneously; inhaled either by placing a mask over the animals and restraining them, or by placing them in an inhalation chamber; or administered orally, through a tube into the stomach, or placing them in the animals' food. Doses may be given once, repeated regularly for many months, or for the lifespan of the animal.