A study of the hematologic effects of chronic low-level exposure to benzene
Collins, J.J.; Conner, P.; Friedlander, B.R.; Easterday, P.A.; Nair, R.S.; Braun, J.
Journal of Occupational Medicine. Official Publication of the Industrial Medical Association 33(5): 619-626
1991
ISSN/ISBN: 0096-1736 PMID: 1870014 Document Number: 3713
A study of 200 persons working with benzene showed no differences in commonly measured hematologic outcomes when compared with 268 nonbenzene workers in the same plant. Exposures ranged from 0.01 ppm to a high of 1.40 ppm 8-hour time weighted average over a 10-year period. Several other factors (age, sex, race, and smoking), however, were associated with these outcomes, indicating the importance of considering confounding factors when comparing hematology results. Exposure to low levels of benzene does not appear to produce an increased level of abnormal hematology measures detectable in routine medical surveillance.
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