HIGHLIGHTS
SUMMARY
Biomonitoring California is a legislatively mandated program that measures and tracks levels of selected environmental chemicals in people. The authors therefore developed a practical approach to identify and follow up on elevated inorganic urinary arsenic levels, in addition to total arsenic. The Centers for Disease Control and Prevention (CDC) established a case definition for inorganic arsenic poisoning, which recommends speciation of urine samples with total arsenic levels > 50 µg/L but does not address inorganic arsenic levels. The authors use 20 µg/L total urinary arsenic to identify urine samples for speciation to ensure . . .
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