Acute Oral Toxicity Analyzes

Acute toxicity describes the adverse effects of a substance resulting from a single exposure or from multiple exposures in a short period of time (usually less than 24 hours). To be defined as acute toxicity, side effects must occur within 14 days of administration of the substance.

Acute toxicity is distinguished from chronic toxicity, which describes adverse health effects from repeated exposures to a substance over a longer period (months or years), usually at lower levels.

Using humans as test subjects for acute toxicity studies is widely considered unethical. However, some information can be obtained from the investigation of accidental human exposures (eg factory accidents). Otherwise, most acute toxicity data comes from animal testing or, more recently, from in vitro testing methods and data on similar substances.

The purposes of acute toxicity testing are to gain an idea of ​​the biological activity of a chemical and its mechanism of action. Information on acute systemic toxicity obtained as a result of the tests is used in hazard identification and risk management in the context of the manufacture, transport and use of chemicals. Today the LD50 value is the basis for the toxicological classification of chemicals. This value is the statistically derived dose value that, when administered in an acute toxicity test, is expected to cause death in 50 percent of treated animals over a given period of time.

Laboratory mice and rats are generally selected for a classic LD50 study. As a result of the extensive discussion about the importance of the LD50 value and the accompanying development of alternative procedures, authorities today generally do not require conventional LD50 tests involving large numbers of animals. The limit test, fixed dose procedure, toxic class method, and more or less methods all represent simplified alternatives using only a few animals. Efforts are also being made to develop in vitro systems. For example, it has been suggested that acute systemic toxicity can be divided into a number of biokinetic, cellular and molecular elements, each of which can be identified and measured in appropriate models.

Our organization also provides acute oral toxicity analysis services with its trained and expert staff and advanced technological equipment, among the numerous test, measurement, analysis and evaluation studies it provides for businesses in various sectors.