LD50 test

LD50, or "lethal dose 50%", is a scientific measure used to determine the amount of a substance needed to cause death in 50% of a test group, typically lab animals. It helps assess the toxicity of chemicals or drugs. Researchers gradually administer increasing doses to groups of animals and observe the outcomes, then calculate the dose at which half of them do not survive. This information is valuable for understanding potential risks and establishing safety guidelines for humans and the environment.