Analytical, Diagnostic and Therapeutic Techniques, and Equipment

Lethal Dose 50

The dose amount of poisonous or toxic substance or dose of ionizing radiation required to kill 50% of the tested population.

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

The dose amount of poisonous or toxic substance or dose of ionizing radiation required to kill 50% of the tested population.

MeSH Record

Classification

Broader headings

Related Concepts

Knowledge Graph

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MeSH Record

Synonyms

2 entry terms
  • LD50
  • Dose 50, Lethal

MeSH Record

Indexing Annotation

usually NIM; do not coordinate with /mortal in experimental studies

MeSH Record

History Note

76(71); was see under TOXICOLOGY 1975

MeSH Record

Previous Indexing

  • specific drug/toxicity (1966-1970)

MeSH Hierarchy

Tree Numbers

  1. E05.940w.402w
  2. G07.225.500w
  3. G07.690.773.875.750w
  4. G07.690.936.500.750w

AMA Style

References

  1. National Library of Medicine. Lethal Dose 50. Medical Subject Headings (MeSH). 2026. Unique ID D007928. http://id.nlm.nih.gov/mesh/2026/D007928
  2. Lethal Dose 50. In: Wikipedia. https://en.wikipedia.org/wiki/Median_lethal_dose
  3. Lethal Dose 50. In: Wikidata. https://www.wikidata.org/wiki/Q711849