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Test Code LAB49 Beta-2-Microglobulin (β2-M), Serum

Reporting Title

Beta-2-Microglobulin

Methodology

Roche Diagnostics, Cobas 8000 Immunoturbidimetric Assay

β2-M is found on the surface of most nucleated cells. It is increased in inflammatory and lymphoproliferative disorders. In renal patients it is useful in distinguishing proximal tubular disorders from glomerular renal diseases.

Results from assays produced by different manufacturers may not be comparable

Performing Laboratory

OhioHealth Laboratory Services-RMH Special Testing

Specimen Requirements

Preferred:

Draw blood in a gold-top or a speckled-top serum gel tube(s). Spin down and send 1 mL of serum refrigerated.   Plain, red-top tube(s) is also acceptable.

Alternate:

Plasma from a Lithium Heparin or  EDTA is also acceptable

 

Specimen Stability Information

Specimen Type Temperature Time
Serum/Plasma Refrigerated 3 days
  Ambient   
  Frozen  6 months

 

Specimen Transport Temperature

Refrigerate/Frozen OK/Ambient NO

Reference Values

0.7-3.4 mg/L

Note:  Patients receiving therapy with mouse monoclonal antibodies may have spurious results.

Day(s) Test Set Up

Monday through Friday Continuous

Saturday and Sunday Day shift only

Test Classification and CPT Coding

82232