CHROMIUM, URINE

Specimen Required
Diet, medication and nutritional supplements may introduce interferring substances. Patients should be encouraged to discontinue nutritional supplements, vitamins, minerals and non-essential over-the-counter medications (upon the advice of their physician). High concentrations of iodine may interfere with elemental testing. Collection of urine specimens from patients receiving iodinated or gadolinium-based contrast media should be avoided for a minimum of 72 hours post-exposure. Collection from patients with impaired kidney function should be avoided for a minimum of 14 days post contrast media exposure.
Collect 24 hour urine in a plastic container. Urine MUST be refrigerated during entire collection period. Mix well and send 8.0 mL urine (1.0 mL minimum) refrigerated in a metal-free plastic transport vial.

Alternate Specimen
Random urine

Rejection Criteria
Urine collected within 72 hours after administration of iodinated or gadolinium based contrast media, specimens contaminated with blood or feces, specimens transported in non-trace metal free containers.

Methodology
Quantitative Inductively Coupled Plasma-Mass Spectrometry

Stability
Room temperature: 7 days; Refrigerated: 14 days; Frozen: 1 year

Reference Range
By report

Performed
Sunday-Saturday

Turnaround Time3-6 days
Test CodeUCHR
CPT-4 Code (s)
82495
LOINC Codes
Creatinine, Urine - per volume:   2161-8  
Creatinine, Urine - per 24h:   2162-6  
Chromium, Urine - per 24h:   5624-2  
Chromium, Urine - ratio to CRT:   29919-8  
Total Volume:   19153-6  
Hours collected:   30211-7  
Chomium, Urine - per volume:   21201-9  

Warde
Medical
Laboratory