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Synovial Fluid Cobalt

Message
Patient Preparation: High concentrations of ga Dolinium and iodine are known to interfere with most metal tests. If either ga Dolinium- or iodine-containing contrast media has been administered, a specimen should not be collected for at least 96 hoursCollect synovial fluid sample following standard operating proceduresCobalt is present in the black rubber plunger seals found in most disposable syringes. As a result, synovial fluid should not be collected in these devices as contamination may occur


Test Code
LAB16373 COBSF


Alias/See Also
COBSF


CPT Codes
83018

Includes
This test should only be used in individuals with metallic prosthetic implants. The significance of cobalt concentrations in synovial fluid in patients without implants is unknown.@BKRCERMSGREFRESH(2302793)@ @BKRCERMSGREFRESH(2302794)@


Instructions
Minimum Testing Volume: 0.4 mL Synovial Fluid Transport Temperature: Refrigerated Stability: Ambient: 90 daysRefrigerated : 90 daysFrozen: 90 days


Report Available
9-Days


Clinical Significance
1230170297



Last Updated: May 18, 2026


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.