Health-based guidance values represent a level of exposureExposureTo glossary below which no health risk is expected. HBGVs are derived on the basis of toxicological data or from studies involving animal experiments. ADIshort forAcceptable Daily Intake, ARfDshort forAcute Reference Dose and TDIshort forTolerable Daily Intake are all examples of HBGVs. From a toxicological perspective, all relevant sources of exposure should be taken into account when evaluating the extent to which a health-based guidance value is reached or exceeded.