Posted Date
Effective Date
Test Name
Cobalt, Serum
Update Type
Test Code Change
CPT Code
83018
Order Code
COS
Referral Laboratory
Mayo Medical Laboratories
TEST CHANGE
Cobalt, Serum
Order Code: COS
Fee Code: AA135 (CPT 83018)
LOINC: 5627-5
Reference Laboratory: Mayo COS
Mayo has requested changes to the method and days performed to be updated effective, September 11, 2025.
| Current | New | |
| Method | Inductively Coupled Plasma-Mass Spectrometry (ICP-MS) | Triple-Quadruple Inductively Coupled Plasma Mass Spectrometry (ICP-MS/MS) |
| Days Performed | Tuesday, Wednesday, Friday | Monday through Friday |