The practical application of a biological control program requires information on: (1) the behavior of the indicators used in relation to exposure, especially those relating to the grade, continuity and duration of exposure, (2 ) the interval between the end of exposure and measurement of indicators, and (3) the physiological factors and different pathological exposure can alter the levels of the indicators.
The following articles describe the behavior of various biological indicators of dose and effect are used to control occupational exposure to widely used in industry. We evaluate the practical usefulness and limitations of each substance, paying particular attention to the time of sampling and interference factors. Such considerations will be useful in establishing criteria for the selection of a biological test.
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