β2-Microglobulin
Also known as: Beta-2 Microglobulin, Serum
Use
Evaluate the severity and prognosis of multiple myeloma, chronic lymphocytic leukemia, or non-Hodgkin's lymphoma; detect kidney damage and distinguish between glomerular and tubular kidney disorders.
Special Instructions
Values obtained with different assay methods should not be used interchangeably in serial testing. Consistent use of one assay method is recommended for monitoring each patient's therapy. This procedure is intended for one-time use only and does not provide serial monitoring. If serial monitoring is required, use serial monitoring number 480020 to order instead.
Limitations
Certain drugs, including lithium, cyclosporine, cisplatin, carboplatin, and aminoglycoside antibiotics, can increase β2-microglobulin concentrations. The assay method ICMA (Immunochemiluminometric assay) used for this test makes the results potentially incompatible with results obtained using other assay methods.
Methodology
Immunoassay (CLIA)
Biomarkers
LOINC Codes
- 1952-1
- 1952-1
Result Turnaround Time
2-4 days
Related Documents
For more information, please review the documents below
Specimen
Serum
Volume
0.5 mL
Minimum Volume
0.3 mL
Container
Red-top tube or gel-barrier tube
Collection Instructions
If a red-top tube is used, transfer separated serum to a plastic transport tube.
Storage Instructions
Refrigerate
Causes for Rejection
Gross hemolysis
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 7 days |
| Refrigerated | 14 days |
| Frozen | 14 days |