Chromium, Urine

Test Code
CHROM(U) 11278

Quest Code

CPT Codes
82495, 82570


Preferred Specimen
2 mL urine collected in an acid-washed metal-free plastic urine container

Minimum Volume
0.5 mL

Collect and transport in an acid-washed, metal-free, leak-proof container.

Transport Temperature
Room temperature

Specimen Stability
Room temperature: 4 days
Refrigerated: 14 days
Frozen: 30 days

Colorimetric (C) • Inductively Coupled Plasma/Mass Spectrometry (ICP/MS)

Setup Schedule
Tue, Thu, Sat

Report Available
2 to 5 Day(s)

Reference Range
Chromium, Urine <2.0 ng/mL
Chromium/Creatinine Ratio <5.0 mcg/g creat

ACGIH Biological Exposure Index
Increase during shift 10 mcg/g cr
End-of-shift at end-of-work-week 30 mcg/g cr

Creatinine, Random Urine

≤6 Months 2-28 mg/dL
7-11 Months 2-31 mg/dL
1-2 Years 2-110 mg/dL
3-8 Years 2-130 mg/dL
9-12 Years 2-160 mg/dL
>12 Years Male 20-320 mg/dL
>12 Years Female 20-275 mg/dL

Clinical Significance
Occupational exposure and exposure to environmental contamination of chromium may lead to toxicity. The need of chromium supplements is unproven. Supplements taken in excess can lead to toxicity.

Performing Laboratory
Quest Diagnostics Nichols Institute
27027 Tourney Road
Valencia, CA 91355-5386

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.