IgM, CSF

Test Code
IGMCS


Quest Code
4449


CPT Codes
82784

Preferred Specimen
1 mL CSF in a sterile screw cap container


Minimum Volume
0.5 mL


Transport Temperature
Frozen


Specimen Stability
Room temperature: 72 hours
Refrigerated: 7 days
Frozen: 90 days


Methodology
Nephelometry

Setup Schedule
A.M. Sets up 2 days a week.


Report Available
Reports in 2 days.


Reference Range
<0.5 mg/dL


Clinical Significance
The CSF concentration of IgM is increased in various infections of the brain and meninges including Borrelia burgdorferi infection and active neurosyphilis. In addition, some patients with multiple sclerosis have an increased concentration of CSF IgM.


Performing Laboratory
Quest Diagnostics Nichols Institute
33608 Ortega Highway
San Juan Capistrano, CA 92690-6130



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.