Cobalt, Whole Blood
Ordering Recommendation
May be used in the assessment of occupational exposure or toxic ingestion.
New York DOH Approval Status
Specimen Required
Diet, medication, and nutritional supplements may introduce interfering substances. Patients should be encouraged to discontinue nutritional supplements, vitamins, minerals, and non-essential over-the-counter medications (upon the advice of their physician).
Royal blue (K2EDTA) or royal blue (NaHep).
Transport 3 or 6 mL whole blood in the original collection tube. (Min: 0.5 mL)
Room temperature. Also acceptable: Refrigerated.
Specimens collected in tubes other than royal blue (K2EDTA) or royal blue (NaHep). Clotted specimens.
Ambient: Indefinitely; Refrigerated: Indefinitely; Frozen: Unacceptable
Methodology
Quantitative Inductively Coupled Plasma-Mass Spectrometry (ICP-MS)
Performed
Sun-Sat
Reported
1-3 days
Reference Interval
Less than or equal to 3.9 µg/L
Interpretive Data
Blood cobalt levels can be used in the assessment of occupational exposure or toxic ingestion. Symptoms associated with cobalt toxicity vary based on route of exposure and may include cardiomyopathy, allergic dermatitis, pulmonary fibrosis, cough and dyspnea. Blood is the preferred specimen type for evaluating metal ion release from metal-on-metal joint arthroplasty.
Elevated results may be due to skin- or collection-related contamination, including the use of tubes that are not certified to be trace element free. If an elevated result is suspected to be due to contamination, confirmation with a second specimen collected in a certified trace element-free tube is recommended.
Methodology: Inductively Coupled Plasma-Mass Spectrometry (ICP-MS).
Laboratory Developed Test (LDT)
Note
Hotline History
Hotline History
CPT Codes
83018
Components
Component Test Code* | Component Chart Name | LOINC |
---|---|---|
0099231 | Cobalt, Whole Blood | 5625-9 |
Aliases
- Blood cobalt concentration
- Co
- COB