[Multi-indicators in the biochemical and clinical evaluation of exposure of workers in the petrochemical industry. I. Preliminary epidemiologic screening studies].

Eleven non-routine biochemical and clinical indicators (selected of 26 preliminarily estimated) in Petrochemical Plant workers and in controls, localized in an increasing distance from the Plant (3-18-40 km), have been measured. Even in the 3 km distance, no effects of the Petrochemical Plant have been found. All the exposed groups exhibited changes in enzymes GGT and TA. We estimate these indicators as universal. The concentration of haptoglobin (Hp) changed in 3 groups, whereas sialic acid and arginase--in 2 exposed groups.