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In toxicology, the median lethal dose, LD 50 (abbreviation for "lethal dose, 50%"), LC 50 (lethal concentration, 50%) or LCt 50 is a toxic unit that measures the lethal dose of a given substance. The value of LD 50 for a substance is the dose required to kill half the members of a tested population after a specified test duration.
Feb 11, 2018 · Learn what the LD50 is and how it is used to measure the toxicity of a substance. Find out the advantages and drawbacks of this method and see examples of its applications.
Mar 9, 2021 · The dose of radiation expected to cause death to 50 percent of an exposed population within 30 days (LD 50/30). Typically, the LD 50/30 is in the range from 400 to 450 rem (4 to 5 sieverts) received over a very short period.
The median lethal dose, LD 50 (abbreviation for "lethal dose, 50%"), LC 50 (lethal concentration, 50%) or LCt 50 (lethal concentration and time) of a toxin, radiation, or pathogen is the dose required to kill half the members of a tested population after a specified test duration.
May 10, 2024 · LD 50 and LC 50 are measures of acute toxicity that indicate the amount or concentration of a chemical that kills or harms 50% of test animals. Learn how these tests are done, what they mean for human health and safety, and how to compare different chemicals.
Aug 11, 2022 · The LD 50 is the dose that kills half (50%) of the animals tested (LD = "lethal dose"). It is a standardized measure for expressing and comparing the toxicity of chemicals.
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Jun 18, 2024 · LD50: LD50 stands for "lethal dose 50" and refers to the amount of a substance that is estimated to be lethal to 50% of the test population. It is commonly used in toxicology studies to determine the toxicity level of a substance.
