Biological Exposure Monitoring (Urine & Blood)
Measuring What Enters the Body – Not Just What’s in the Air
We provide biological exposure monitoring interpretation services across New Zealand to assess worker exposure to hazardous substances through analysis of biological samples such as urine and blood.
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This approach provides a direct measure of internal dose, complementing workplace air monitoring and delivering a more complete understanding of actual exposure.
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Our assessments are undertaken in accordance with the Workplace Exposure Standards and Biological Exposure Indices (WES/BEI), alongside recognised international occupational hygiene guidance.
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Biological monitoring is a critical tool for verifying whether control measures are effectively protecting workers and ensuring exposure remains within acceptable health-based limits
Our Biological Exposure Monitoring Services
Urine Biological Monitoring Interpretation
Assessment of chemical metabolites in urine to evaluate exposure to solvents, metals, and industrial chemicals. Results are interpreted against BEI guideline values to determine exposure significance and risk.
Blood Lead & Heavy Metal Assessment
Measurement and interpretation of blood concentrations of lead and other toxic or heavy metals where systemic or cumulative exposure is a concern.
Exposure Interpretation & Risk Assessment
Professional evaluation of biological results against the BEI and recognised international occupational hygiene benchmarks.
Exposure Pathway Assessment
Identification of how exposure is occurring (inhalation, dermal absorption, ingestion) based on tasks, processes, and workplace conditions.
Exposure Trend & Pattern Analysis
Analysis of exposure data over time to identify recurring, cumulative, or task-based exposure risks.
Control Effectiveness Review
Assessment of whether engineering controls, PPE, and work practices are effectively reducing internal exposure.
Health Risk Reporting & Recommendations
Clear, practical reporting with actionable recommendations to reduce exposure, improve controls, and strengthen workplace health protection systems.
Why it Matters
Air monitoring alone does not always reflect what is absorbed into the body. Biological monitoring measures actual uptake, including exposure via:
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Inhalation
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Dermal absorption
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Ingestion
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Without biological monitoring, significant exposures may go undetected even when airborne concentrations appear compliant.
We help you:
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Confirm actual internal exposure levels (biological dose)
Verify effectiveness of PPE and engineering controls
Identify hidden or cumulative exposure risks
Support benchmarking with BEI
Reduce risk of long-term health effects from hazardous substances
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