Cobalt, Serum/Plasma 

Test Code
COBALT (345)

Quest Code
345

CPT Codes
83018

Preferred Specimen
0.5 mL serum in trace-metal free acid-washed plastic screw-capped vial

Minimum Volume
0.2 mL

Other Acceptable Specimens
Plasma collected in an EDTA trace metal (royal blue-top) tube

Instructions
All venipunctures should be performed using trace metal-free, (royal blue-top) tubes. Promptly centrifuge and separate serum or plasma specimens into acid-washed, plastic, screw-capped vial(s), using approved guidelines.

Transport Temperature
Refrigerated (cold packs)

Specimen Stability
Room temperature: 10 days
Refrigerated: 10 days
Frozen: 10 days

Methodology
Inductively Coupled Plasma/Mass Spectrometry (ICP/MS)

Setup Schedule
Set up: Tues-Sat; Report available: 1-3 days

Reference Range
0.1-0.4 mcg/L

Clinical Significance
Purpose: Occupational exposure monitoring, evaluation of orthopedic implants.

Performing Laboratory
Quest Diagnostics Chantilly
14225 Newbrook Dr.
Chantilly, VA 20153-0841



The CPT Codes provided in this document 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 payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.