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Encyclopedia > Bioassay

Also known as a biological assay, a bioassay is a measurement of the effects of a substance on living organisms.

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Bioassay (234 words)
Bioassay is a method for the quantitative estimation of the effects that result in a biological system after its exposure to a substance.
Bioassays allow for a quantitative measurement of the effect of a substance on a biological system.
Bioassays are most frequently used when there are a number of steps, usually poorly understood, between the substance exposure and the behaviour observed, or when the substance is a complex mixture of materials and it is not clear what the active components are.
Radiation Safety Training - Idaho State University (912 words)
The bioassay interval for a particular radionuclide is determined by its physical and metabolic characteristics, and by the instrumentation used for the measurement.
A bioassay is required within the normal bioassay interval for each individual who was present in an area during a time when removable contamination exceeding 10 RCL was present on any readily accessible surface.
Routine bioassays may be waived at the discretion of the RSO if the records of contamination surveys of both the user and the RSO verify that there was no exposure to unconfined radioactive materials exceeding the levels specified above and no incidents of personal contamination since the last bioassay.
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