Average Daily Dose (ADD)
Average Daily Dose (ADD) : Radiation and Radiological Disasters. The average dose received on any given day during a period of exposure, expressed in mg/kg body weight/day. Ordinarily used in assessing noncancer risks. [REAP, 1995: Residential Exposure Assessment Project]; (b) Dose rate averaged over a pathway specific period of exposure expressed as a daily dose on a perunit- body-weight basis. The ADD is used for exposure to chemicals with non-carcinogenic, non-chronic effects. The ADD is usually expressed in terms of mg/kg-day or other mass/mass-time units. [USEPA, 1997b: Exposure Factors Handbook] [IRIS, 1999: Glossary of IRIS Terms]; (c) Dose that is averaged over a specified time period taking into account the frequency, duration, and intensity of exposure during that time period. ADDs are usually expressed in units of mg/kg/day. [USEPA, 1998: Postapp. Exposure Test GL.]
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