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Test ID CR Chromium, Random, Urine

Useful For

Screening for occupational exposure to chromium


Monitoring metallic prosthetic implant wear

Method Name

Dynamic Reaction Cell-Inductively Coupled Plasma-Mass Spectometry (DRC-ICP-MS)

Reporting Name

Chromium, Random, U

Specimen Type


Specimen Required

Patient Preparation: High concentrations of gadolinium and iodine are known to interfere with most metals tests. If either gadolinium- or iodine-containing contrast media has been administered, a specimen should not be collected for 96 hours.

Collection Container/Tube: Clean, plastic urine collection container

Submission Container/Tube: Plastic, 6 mL tube (T465) or a clean, plastic aliquot container with no metal cap or glued insert

Specimen Volume: 2 mL

Collection Instructions:

1. Collect a random urine specimen.

2. See Trace Metals Analysis Specimen Collection and Transport in Special Instructions for complete instructions.

Specimen Minimum Volume

0.4 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
Urine Refrigerated (preferred) 28 days
  Ambient  28 days
  Frozen  28 days

Reference Values

No established reference values

Day(s) and Time(s) Performed

Tuesday, Friday; Continuously

Performing Laboratory

Mayo Clinic Laboratories in Rochester

CPT Code Information


LOINC Code Information

Test ID Test Order Name Order LOINC Value
CR Chromium, Random, U 5623-4


Result ID Test Result Name Result LOINC Value
31078 Chromium, Random, U 5623-4

Test Classification

This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the U.S. Food and Drug Administration.

NY State Approved