biological half-life


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biological half-life

n.

biological half-life

the time required for the body to eliminate half of an administered dose of any substance by regular physiological processes. The biological half-life is approximately the same for stable and radioactive isotopes of a specific element. Also called metabolic half-life. See also effective half-life, half-life.
Biology The time required for one half of the total amount of a particular substance in a biological system to be degraded by biological processes when the rate of removal is nearly exponential
Nuclear physics The length of time required for one half of a radioactive substance to be biologically eliminated from the body

biological half-life

T1/2 Biology The time required for 1⁄2 of the total amount of a particular substance in a biologic system to be degraded by biological processes when the rate of removal is nearly exponential Radiation physics The length of time required for1/2 of a radioactive substance to be biologically eliminated from the body
References in periodicals archive ?
Biological half-life of maternal enterovirus 71 neutralizing antibodies in 154 seropositive neonates, determined by crosssectional and longitudinal analyses, Taiwan * Antibody titers GMT at birth at 6 mo of age No.
Further, in blood, DEHP is rapidly metabolized with a biological half-life in humans of < 6 hr (e.
by pulmonary delivery, and to predictably extend the biological half-life of SCAs by PEGylation, further expands the clinical utility of SCA products beyond the range of monoclonal antibodies.
For example, the reported biological half-life for 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) is 7.