minimal risk level


Also found in: Acronyms.

minimal risk level

An Agency for Toxic Substances and Disease Registry (ATSDR) estimate of daily human exposure to a hazardous substance at or below which that substance is unlikely to pose a measurable risk of adverse, noncancerous effects. Minimal risk levels are calculated over a specified time period (acute, intermediate or chronic), and are derived when reliable and sufficient data exist to identify the target organ(s) of effect or the most sensitive health effect(s) for a specific duration via a given route of exposure (e.g., inhalation or oral).
References in periodicals archive ?
has estimated minimal risk levels (MRLs) for total dietary intake of arsenic dependent on arsenic species.
The concentration of mercury equilibrates at about 7 [micro]g/[m.sup.3], an order of magnitude higher than the ATSDR's minimal risk level, but an order of magnitude less than the occupational exposure limits.
environmental Drinking 10 16 level in ppb (a) Protection Agency water (2010, 2011) Minimal risk level Agency for Toxic All food 0.3 N/A in [micro]g per kg Substances and beverages of body weight Disease Registry per day Method detection AmTest Water and 0.1 0.05 limit in ppb juices (a)ppb=parts per billion.
EPA, 1989b); the Minimal Risk Level (ATSDR, 1992; ATSDR, 1993); and the lethal dose for humans (ATSDR, 1993).
To accomplish this, we will use the most up-to-date, science-based information available, including the new toxicological profiles recently released by the Agency for Toxic Substance for Disease Registry, which identify minimal risk levels for these chemicals.
Minimal Risk Levels (MRLs) for Hazardous Substances.