Human biomonitoring assessment values: approaches and data requirements

Area of Science:

• Environmental Health Sciences
• Toxicology
• Biomonitoring

Background:

• Human biomonitoring (HBM) data is crucial for assessing chemical exposures.
• Health risk assessment requires HBM assessment values, but data is limited for many chemicals.
• Existing HBM assessment values derived from human exposure-response data are scarce.

Purpose of the Study:

• To review and demonstrate approaches for deriving HBM assessment values.
• To expand the range of chemicals with available HBM assessment values.
• To provide tools for evaluating HBM data across diverse chemicals and populations.

Main Methods:

• Translating external dose-based guidance values (e.g., tolerable daily intakes) into equivalent biomonitoring levels.
• Reviewing the development of HBM values by the German HBM Commission.
• Examining Biomonitoring Equivalents developed by Summit Toxicology.

Main Results:

• Conceptually similar assessment values have been developed by different organizations.
• Approaches exist to broaden the derivation of HBM assessment values for more chemicals.
• HBM assessment values have been published for over 80 chemicals.

Conclusions:

• The reviewed methods and examples facilitate the derivation of HBM assessment values.
• These derived values enhance the evaluation of HBM data.
• Expanded HBM assessment values support broader chemical and population risk assessment.