Beta-2 microglobulin

Alternative names, keywords

B2M, β₂-microglobulin

Samples required

● Clotted blood (gold cap, 5 mL tube). Smaller tubes are available for paediatric samples.

Test indications

Assists with the initial prognosis of myeloma.

Factors affecting test performance/ results

In very rare cases, gammopathy, in particular type IgM (Waldenström’s macroglobulinemia), may cause unreliable results..

Results should always be assessed in conjunction with the patient’s medical history, clinical examination and other findings.

Reference range

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

_{Source: Roche Cobas® β2-Microglobulin kit insert, 2024-09, V6.0}

Turnaround time

Same day

Enquiries

Biochemistry (Automation)