Chromium, Urine

Test Code

11278

CPT Codes
82495, 82570

Includes

Creatinine

Preferred Specimen

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

Minimum Volume

0.5 mL

Instructions

Note: Tests performed on a specimen submitted in a non-trace element tube/container (non acid-washed) may not accurately reflect the patient's level. If a non-trace element tube/container is received, it will be accepted for testing. However, elevated results shall be reported with a message that resubmission with a trace element tube/container is recommended.

Transport Container

Acid-washed or metal-free container

Transport Temperature

Room temperature

Specimen Stability

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

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

FDA Status
This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by FDA. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.

Setup Schedule

Tues, Thurs

Report Available

10 days

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-Chantilly VA

14225 Newbrook Drive

Chantilly, VA 20151-2228

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.