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Descriptor English: Half-Life
Descriptor Spanish: Semivida
Descriptor semivida
Entry term(s) hemivida
periodo de semidesintegración
semivida radioactiva
vida media
Scope note: Tiempo que tarda una sustancia (fármaco, núclido radiactivo u otras) en perder la mitad de su actividad farmacológica, fisiológica o radiológica.
Descriptor Portuguese: Meia-Vida
Descriptor French: Période
Entry term(s): Half Life
Half-Lifes
Halflife
Halflifes
Tree number(s): G01.910.405
SP8.665.152.465.583
RDF Unique Identifier: https://id.nlm.nih.gov/mesh/D006207
Scope note: The time it takes for a substance (drug, radioactive nuclide, or other) to lose half of its pharmacologic, physiologic, or radiologic activity.
Annotation: usually NIM
Allowable Qualifiers: No qualifiers
Previous Indexing: Time (1966-1970)
specific radioisotope, substance, or cell
Public MeSH Note: 74
History Note: 74(71)
DeCS ID: 6360
Unique ID: D006207
Documents indexed in the Virtual Health Library (VHL): Click here to access the VHL documents
Date Established: 1974/01/01
Date of Entry: 1999/01/01
Revision Date: 2008/07/08
Half-Life - Preferred
Concept UI M0009757
Scope note The time it takes for a substance (drug, radioactive nuclide, or other) to lose half of its pharmacologic, physiologic, or radiologic activity.
Preferred term Half-Life
Entry term(s) Half Life
Half-Lifes
Halflife
Halflifes



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