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Cobalt, Random Urine

Test Code


CPT Code(s)


Preferred Specimen(s)

7 mL urine, submitted in an acid-washed, metal-free, plastic leak-proof container

Minimum Volume

3 mL

Collection Instructions

Avoid worksite collection.

Transport Temperature

Refrigerated (cold packs)

Specimen Stability

Room temperature: 48 hours
Refrigerated: 5 days
Frozen: 14 days


Inductively Coupled Plasma/Mass Spectrometry (ICP/MS)

Performing Laboratory

Quest Diagnostics Nichols Institute
14225 Newbrook Drive
Chantilly, VA 20153

Setup Schedule

Set up: Tues-Sat (evening shift); Report available: Same day

Reference Range(s)

Cobalt, Random Urine

Non-exposed Adult ≤2.8 mcg/L
Biological Exposure Index (end of shift/work week) ≤15.0 mcg/L

Clinical Significance

Cobalt is part of our diet. Approximately 85% of absorbed cobalt is excreted in the urine and the remainder eliminated in stool. Toxicity may occur in select industrial environments. Cobalt is not mined in the United States so primary supplies are imported.

LOINC®' Code(s)

The Result and LOINC information listed below should not be used for electronic interface maintenance with Quest Diagnostics. Please contact the Quest Diagnostics Connectivity Help Desk for more information at 800-697-9302.

NOTE: The codes listed in the table below are not orderable Test Codes.

Result NameLOINC CodeComponent Name
37513Cobalt, Random Urine5628-3Cobalt

Reference ranges are provided as general guidance only. To interpret test results use the reference range in the laboratory report.

The CPT codes provided 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 payer being billed.

LOINC assignment is based on a combination of test attributes, including the method used by the performing laboratory. For tests not performed by Quest Diagnostics, codes are assigned by the performing laboratory.

* The tests listed by specialist are a select group of tests offered. For a complete list of Quest Diagnostics tests, please refer to our Directory of Services.