New Zealand Explanation of workplace exposure standards-Biological Exposure

New Zealand Explanation of workplace exposure standards (WES)-Biological Exposure Indices (BEI) serves as a biological monitoring reference system to assist in assessing worker health risks. This table infers internal body burden levels by measuring concentrations of chemical substances or their metabolites in worker biological samples (such as urine, blood, and exhaled breath). It primarily includes indicators reflecting organic solvent metabolism and heavy metal accumulation. When monitoring results exceed BEI values, immediate health risk assessment is indicated.