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HelpTest Code B2MC Beta-2-Microglobulin (Beta-2-M), Spinal Fluid
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Specimen Type
CSFOrdering Guidance
This test should be ordered for evaluation of central nervous system inflammation and B-cell proliferative diseases.
For evaluation of a suspected spinal fluid leak, order BTP / Beta Trace Protein, Body Fluid.
Specimen Required
Container/Tube: Sterile vial
Specimen Volume: 1 mL
Collection Instructions: Send spinal fluid from collection vial 1.
Specimen Minimum Volume
0.5 mL
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| CSF | Refrigerated (preferred) | 28 days |
| Frozen | 28 days | |
| Ambient | 14 days |
Reference Values
0.70-1.80 mcg/mL
Day(s) Performed
Monday through Friday
CPT Code Information
82232
Report Available
1 to 3 daysSpecimen Retention Time
14 daysReject Due To
| Gross hemolysis | OK |