Chemicals and Drugs

Indicators and Reagents

Substances used for the detection, identification, analysis, etc. of chemical, biological, or pathologic processes or conditions. Indicators are substances that change in physical appearance, e.g., color, at or approaching the endpoint of a chemical titration, e.g., on the passage between acidity and alkalinity. Reagents are substances used for the detection or determination of another substance by chemical or microscopical means, especially analysis. Types of reagents are precipitants, solvents, oxidizers, reducers, fluxes, and colorimetric reagents. (From Grant & Hackh's Chemical Dictionary, 5th ed, p301, p499)

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

Substances used for the detection, identification, analysis, etc. of chemical, biological, or pathologic processes or conditions. Indicators are substances that change in physical appearance, e.g., color, at or approaching the endpoint of a chemical titration, e.g., on the passage between acidity and alkalinity. Reagents are substances used for the detection or determination of another substance by chemical or microscopical means, especially analysis. Types of reagents are precipitants, solvents, oxidizers, reducers, fluxes, and colorimetric reagents. (From Grant & Hackh's Chemical Dictionary, 5th ed, p301, p499)

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Synonyms

5 entry terms
  • Reagents and Indicators
  • Indicator
  • Indicators
  • Reagent
  • Reagents

MeSH Record

Aspects Covered

18 allowable subheadings

Indexed with the subheadings administration & dosage, adverse effects, analysis, chemical synthesis, chemistry, classification, economics, history, isolation & purification, metabolism, pharmacokinetics, pharmacology, poisoning, radiation effects, standards, supply & distribution, therapeutic use, toxicity.

MeSH Record

Indexing Annotation

coordinate NIM with specific substance (IM or NIM); REAGENT KITS, DIAGNOSTIC & REAGENT STRIPS are also available

MeSH Hierarchy

Tree Number

  1. D27.720.470.410

AMA Style

References

  1. National Library of Medicine. Indicators and Reagents. Medical Subject Headings (MeSH). 2026. Unique ID D007202. http://id.nlm.nih.gov/mesh/2026/D007202
  2. Indicators and Reagents. In: Wikidata. https://www.wikidata.org/wiki/Q50377175