Table 1.

Urinary mercury concentrations and health effects

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