β2-microglobulin

Test investigation

β2-microglobulin

Laboratory offering test

NNUH

Units

mg/L

Also known as/Frequency of test

B2M

Indications

β2-microglobulin is a component of the HLA Class I antigen complex. Serum levels rise due to high cell turnover in B cell malignancy and reduced excretion fin renal dysfunction. Measurement of β2-Microglobulin indirectly reflects tumour mass and renal function.

Comments precautions

Can be measured once pre-treatment for patients with confirmed myeloma. Repeat levels are not required

Sample type

Serum

Turnaround times (TAT) Urgent/Routine/GP or OPD

1 week

Reference intervals

1.2 – 2.4 mg/L