Exposure reference values

Development strategy, scope, limits of use… everything you need to know about the role and derivation of exposure reference values for the various populations studied in biomonitoring studies

Exposure reference values make it possible to determine whether an individual or a group of people has been exposed to higher levels of chemicals than those observed in the general French population.

One of the objectives of the national biomonitoring program led by Santé publique France is to develop exposure reference values (ERVs) for the French population. These ERVs represent the reference level of exposure of the French population, or specific population subgroups, to a given substance at a given time.

The scope and limitations of VREs

The use of VREs allows for:

  • Compare measured contamination levels at the local and/or international level

  • Provide decision-making support for the implementation of management measures tailored to the contexts under study

  • Evaluate the effectiveness of public policies implemented to limit exposure to chemicals of concern.

However, these VREs do not allow for the direct characterization of the health risk associated with a given exposure level.

A French strategy for developing VREs to ensure international comparability

To establish a standardized framework for developing French VREs and ensure good comparability with international values, it was necessary to define a strategy for developing VREs based on French biomonitoring data.

This strategy is based on an analysis of options used internationally and draws inspiration from the choices adopted by the majority of scientific experts in human biomonitoring worldwide (Germany, Canada, the Czech Republic, Brazil, etc.), namely the use of the 95th percentile of the distribution of exposure levels for the development of VREs. The successive application of exclusion, authorization, and partitioning criteria to biomonitoring data ensures the production of standardized French VREs that are internationally comparable. The efforts undertaken as part of this work have contributed to the definition of a European strategy for developing VREs within the framework of the HBM4EU project.

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rapport/synthèse

7 June 2019

Development of exposure reference values based on biomonitoring data

The various exposure reference values established for different population groups (pregnant women, children, and adults) based on biomonitoring studies conducted by Santé publique France are presented below.

In addition to these reference exposure values for metals, the reports include all population distributions for individuals aged 18 to 74 living in mainland France in 2006–2007, covering metals as well as certain pesticides and PCBs.

Learn more:

Biomarkers Target population, mainland France VRE
Urinary antimony Ages 18 to 74 0.30 µg/g of creatinine
Inorganic arsenic and its two metabolites (Asi + MMA + DMA) in urine Ages 18 to 74 who have not consumed fish in the 72 hours prior to sampling 10 µg/g of creatinine
Urinary cadmium Under 40 years of age, non-smoker 0.50 µg/g of creatinine
Non-smoking men over 40 0.7 µg/g of creatinine
Non-smoking women over 40 1.2 µg/g of creatinine
Urinary chromium under 60 years of age 0.50 µg/g of creatinine
60 years and older 1 µg/g of creatinine
Urinary cobalt Men aged 18 to 74 and women aged 60 and older 0.7 µg/g of creatinine
Women under 60 2 µg/g of creatinine
Urinary tin Men aged 18 to 74 4 µg/g of creatinine
Mercury in hair Children aged 6 to 17 1.5 µg/g of hair
18 to 60 years 2.5 µg/g of hair
60 years and older 3.5 µg/g of hair
Urinary nickel 18 to 74 years 4 µg/g of creatinine
Blood lead Women and men under 40 70 µg/L
Men over 40 120 µg/L
Urinary uranium Ages 18 to 74 25 ng/g of creatinine
Urinary vanadium 18 to 74 years 4 µg/g of creatinine

Based on the Elfe cohort (2011) for pregnant women and on the Esteban study (2014–2016) for adults aged 18–74 and children aged 6–17.

In addition to these exposure reference values, the reports provide all distributions for the population living in mainland France in 2014–2016 aged 6 to 74.

Regarding the six families of everyday products:

Regarding metals:

Regarding lead:

Regarding organic pollutants and metals in women who gave birth in 2011:

Download: Exposure reference values applied for each available biomarker, by study population (table)