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Table 1 Urinary mercury concentrations and health effects

From: Dental amalgam and urinary mercury concentrations: a descriptive study

No risk for adverse health effects (HBM-I)[11] Increased risk for adverse health effects (HBM-II)[11] Onset of sub-clinical adverse effects on kidney function[5] Onset of clinical mercurialism[5]
No action required Action required   
5 μg Hg/g Cr 20 μg/g Cr 50 μg Hg/g Cr 100 μg Hg/g Cr
or or
7 μg Hg/L 25 μg/L