EAST is an abbreviation for: "Exposure ASsessment Tool". It is a calculator, that is developed and maintained by the author of this portal for rapid exposure assessment of chemical compounds in food, e.g. for selection of the appropriate type of RASFF notification. As such it is well suited for official control organizations. The RASFF system is used to notify the European Commission and the member States in case of food safety issues. An introduction to RASFF can be found on its website, with a link to the RASFF portal. In Regulation 1715/2019 (the IMSOC Regulation) it is described that member states classify the risk prior to sending the notification.

An updated version EAST 2 was developed using EFSAs latest PRIMO model revision 3.1. Read more about the differences between EAST and EAST 2.

Exposure assessment

EAST is based on the globally used food safety assessment approach (e.g. see the WHO Environmental Health Criteria 240). It calculates the intake of a chemical from food, using the concentration of the chemical substance and the consumption quantities of a consumer. The intake is compared with a maximum exposure limit for the substance. This limit is the Health Based Guidance Value (HBGV) , and well know examples of these limits are the ADI and TDI, and the ARfD and RfD. For the evaluation of genotoxic chemical substances the slope factor or a BMDL is used. In all cases the intake doses are normalized by means of the body weight of the consumer.


The necessary data for HBGvs and consumption quantities in EAST are taken from different databases. HBGVs are published by EFSA (in the OpenFoodTox database) and by US-EPA (IRIS). For consumption quantities, data were copied from the EFSA PRIMo spreadsheet. The underlying databases are frequently checked for updates, and the EAST datasets are updated accordingly.

How to use EAST

To start the online version of EAST or EAST 2, select its icon
In an additional page more information can be found on how to use EAST...


As the EFSA RACE tool is also intended for rapid exposure assessment, EAST can be seen as a "competitor" or a "copy" of RACE. EAST was however developed independently from RACE. EAST has a more intuitive user interface, as EAST was made in close collaboration with less experienced users. EAST also provides you with some additional support that cannot be found in RACE; it calculates the Limit of Rejection and the Maximum Consumption Quantity. It also gives you the possibility to include a HBGV or a consumption scenario from sources other than the databases (like a national food consumption inquiry). In contrast to RACE does EAST not load and store information of users, and therefore there is no need for the registration. Read more on RACE.. .