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HelpTest ID CROMU Chromium for Occupational Monitoring, Random, Urine
Useful For
Screening for occupational exposure
Special Instructions
Method Name
CROM: Dynamic Reaction Cell-Inductively Coupled Plasma-Mass Spectometry (DRC-ICP-MS)
CDCR: Enzymatic Colorimetric Assay
Reporting Name
Chromium, Occupational Monitor, USpecimen Type
UrineSpecimen 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, 5-mL tube (T465) or a clean, plastic aliquot container with no metal cap or glued insert
Specimen Volume: 5 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
2 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Urine | Refrigerated (preferred) | 28 days | |
| Ambient | 28 days | ||
| Frozen | 28 days |
Reference Values
Chromium/creatinine ratio: <10.0 mcg/g creatinine
Day(s) and Time(s) Performed
Tuesday, Friday; Continuously
Performing Laboratory
Mayo Clinic Laboratories in Rochester
CPT Code Information
82495 Chromium, Concentration
82570 Creatinine Concentration
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| CROMU | Chromium, Occupational Monitor, U | 13464-3 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| CDCR | Creatinine Conc | 2161-8 |
| 26570 | Chromium, Random, U | 5623-4 |
| 29512 | Chromium/Creatinine Ratio | 13464-3 |
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.Profile Information
| Test ID | Reporting Name | Available Separately | Always Performed |
|---|---|---|---|
| CROM | Chromium, Random, U | No | Yes |
| CDCR | Creatinine Conc | No | Yes |