Hemocytometry of workers exposed to benzene and analogues

[Objective] The blood examination data of workers exposed to benzene and analogues were analyzed to understand the adverse effect of benzene exposure on hemocytometry. [Methods] The data of 2 620 exposed workers (male 1 142, female 1 186) and 2 511 control workers (male 1 437, female 1 074) were compared. [Results] Compared with reference group without any exposure history to benzene and analogues, the exposed workers had a lower level of leukocytes counting, particularly neutrophilic leukocytes, erythrocyte counting,hemoglobin and blood platelet counting. The number of abnormal workers was significant higher than that in the reference group. [Conclusion] The occupational exposure to benzene and analogues may have adverse effect on hemocytometry under current exposure level and it should be given more attention to.