Ordering Recommendation

Use for risk stratification and staging of multiple myeloma, Waldenstrom macroglobulinemia, and other lymphoproliferative disorders. Aids in differentiating glomerular and tubular renal disease.

Mnemonic
B2M S
Methodology

Quantitative Immunoturbidimetry

Performed

Sun-Sat

Reported

Within 24 hours

New York DOH Approval Status
This test is New York DOH approved.
Specimen Required
Patient Preparation
Collect

Serum separator tube. Also acceptable: Green (sodium or lithium heparin), lavender (EDTA), or pink (K2EDTA).

Specimen Preparation

Allow specimen to clot completely at room temperature. Separate serum or plasma from cells ASAP or within 2 hours of collection. Transfer 1 mL serum or plasma to an ARUP Standard Transport Tube. (Min: 0.3 mL)

Storage/Transport Temperature

Frozen.

Unacceptable Conditions

CSF (refer to Beta-2 Microglobulin, CSF, ARUP test code 0080054)

Remarks
Stability

After separation from cells: Ambient: 72 hours; Refrigerated: 72 hours; Frozen: 6 months

Reference Interval

1.1-2.4 mg/L

Interpretive Data



Compliance Category

FDA

Note
Hotline History
N/A
CPT Codes

82232

Components
Component Test Code* Component Chart Name LOINC
0080059 Beta-2-Microglobulin, Serum/Plasma 1952-1
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
Aliases
  • B2 Microglobulin
  • B2M, Serum
  • Beta Microglobulin
  • Beta-2-Microglobulin
  • Microglobulin, Beta 2
  • Serum B2M
  • Serum beta-2 microglobulin
Beta-2 Microglobulin, Serum or Plasma