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HelpTest Code COUO Cobalt Occupational Exposure, Random, Urine
Ordering Guidance
High concentrations of gadolinium and iodine are known to interfere with most metal tests. If either gadolinium- or iodine-containing contrast media has been administered, a specimen should not be collected for 96 hours.
Specimen Required
Supplies: Urine Tubes, 10 mL (T068)
Collection Container/Tube: Clean, plastic urine collection container
Submission Container/Tube: Plastic 10 mL urine tube or a clean, plastic aliquot container with no metal cap or glued insert
Specimen Volume: 3 mL
Collection Instructions:
1. At the end of the work week, collect a random urine specimen at the end of the employee's work shift.
2. See Metals Analysis Specimen Collection and Transport for complete instructions.
Specimen Type
UrineSpecimen Minimum Volume
2 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Urine | Refrigerated (preferred) | 28 days | |
| Frozen | 28 days | ||
| Ambient | 14 days |
Reject Due To
All specimens will be evaluated at Mayo Clinic Laboratories for test suitability.Reference Values
COBALT:
0-17 years: Not established
≥18 years: The American Conference of Governmental Industrial Hygienists Biological Exposure Index for cobalt in urine is an end-of-shift concentration above14.9 mcg/L at the end of the work week.
CREATININE:
≥18 years old: 16-326 mg/dL
Reference values have not been established for patients who are younger than 18 years of age.
Specimen Retention Time
14 daysPerforming Laboratory
Mayo Clinic Laboratories in Rochester
CPT Code Information
83018
82570
Day(s) Performed
Tuesday, Wednesday, Friday