Evaluate exposure to chromium
24-hr urine collection container, acid washed
How to collect a 24-hr urine sample
Urine cup - acid washed (metal free)
Refrigerated (preferred)
Ambient - 3 days
Frozen (OK)
Inductively Coupled Plasma Mass Spectrometry (ICP-MS)
≤ 2.0 ng/mL
>100 ng/mL
Medical necessity