The LD-50 is a measure of toxicity describing the dose that kills what percentage of a test population?

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Multiple Choice

The LD-50 is a measure of toxicity describing the dose that kills what percentage of a test population?

Explanation:
LD-50 describes the dose that kills 50% of a test population, i.e., the median lethal dose. It’s derived from dose–response data and is used to compare relative toxicities; a lower LD-50 means greater toxicity because a smaller amount is lethal to half the population. It’s not the dose that kills everyone, and it doesn’t refer to 25% or 75% mortality.

LD-50 describes the dose that kills 50% of a test population, i.e., the median lethal dose. It’s derived from dose–response data and is used to compare relative toxicities; a lower LD-50 means greater toxicity because a smaller amount is lethal to half the population. It’s not the dose that kills everyone, and it doesn’t refer to 25% or 75% mortality.

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