Biological Monitoring Calculator

Compare biological specimen results (blood or urine) against ACGIH Biological Exposure Indices (BEIs) with creatinine correction for urine samples.

Measured value (µg/L or µg/dL)

BEI reference value

Urine creatinine (g/L)

Specimen type (1=Urine, 0=Blood)

Workers in group

Prior result (µg/L)

Tab to move between fields

BEI ratio

0.42

Corrected concentration20.83

Creatinine valid? (1/0)1

Action code (0-3)0

Trend vs prior (%)0%

Exceeds BEI?0

Geometric Mean25

How to Use This Calculator

Enter Measured value (µg/L or µg/dL), BEI reference value, and Urine creatinine (g/L).
Set Specimen type (1=Urine, 0=Blood), Workers in group, and Prior result (µg/L).
Review the BEI ratio result.
Use Corrected concentration and Creatinine valid? (1/0) to inform your decision.

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