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.

New York DOH Approval Status

This test is New York state approved.

Specimen Required

Patient Preparation
Collect

Serum/plasma separator tube. Also acceptable: Green (lithium heparin), or pink (K2EDTA or K3EDTA).

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

Methodology

Quantitative Immunoturbidimetry

Performed

Sun-Sat

Reported

Within 24 hours

Reference Interval

Effective February 22, 2022

<60 years 0.8 - 2.4 mg/L
>60 years ≤3.0 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