Lethal Dose 50% (LD50)

Definition

Lethal Dose 50% (LD50) refers to the amount of a substance or radiation dose that is lethal to 50% of the test population within a specified time period. It is commonly used in toxicology studies to measure the relative toxicity of different substances.

Related terms

Toxicity:

Toxicity refers to how harmful or poisonous a substance is. It can vary depending on factors such as dosage, exposure route, and individual susceptibility.

Acute toxicity:

Acute toxicity refers to adverse effects caused by short-term exposure to high levels of a substance. These effects may occur immediately or shortly after exposure.

Chronic toxicity: Chronic toxicity refers to adverse effects caused by long-term exposure to low levels of a substance. These effects may develop over an extended period and can be cumulative or delayed.