The evaluation of exposure to heavy metals
Collect random urine specimen in an acid washed (metal free) urine cup
Urine cup - acid washed (metal free)
Refrigerated (preferred)
Ambient - <3 days
Spectrophotometry,
Inductively Coupled Plasma/Mass Spectrometry (ICP/MS)
Cadmium: <5.0 ng/mL
Arsenic: BEI: < 35 ng/mL
Lead: <1.0 ng/mL
Mercury: <20 ng/mL
Cadmium: 7.0 µg/g creatinine or 10 ng/mL