Abstract
Urine and plasma mercury values in relation to hand tremor and proteinuria were studied for workers in three workshops of different types of mercury exposure. Proteinuria was transiently observed in workers of shorter length of mercury ex-posure, but the ephemerality of hand tremor was partial, i.e., different by types of exposure, and was observed in workers of longer length of exposure.
No good correlations were observed between urine or plasma mercury values and these two symptoms, and relations of urine to plasma mercury values differed by the type of exposure and the uniformity in workers' composition in duration of exposure.
The minimum urine or plasma mercury value and its variation due to the type of exposure were discussed at appearance or persistence of hand tremor and pro-teinuria.
