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Test Code: B2M Preferred Name Beta-2-microglobulin SERUM

Results Avail After Hours:No

Urgent:N/A

Test Frequency:Weekly

Routine:1 week

MBS Status:Medicare Item

Min. Re-Test Interval:N/A

Public price:

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Test Tubes

Specimen Type	Specimen Volume	Tube Type
Blood (adult)	4 mL	SST with gel 8.5 mL (Dark Yellow Top)
Blood (paediatric)	500 µL	SST with gel 600 uL Paed (Red or Yellow top)
Blood (neonatal)	500 µL	SST with gel 600 uL Paed (Red or Yellow top)

COLLECTION NOTES

--No collection notes--

GENERAL NOTES

APPLICATION: Provides a useful indicator of prognosis and can be used to follow progression in multiple myeloma.
Prediction of prognosis in HIV infection, in association with absolute CD4 count and viral load.

INTERPRETATION: Levels are correlated with tumour load, and thus prognosis, in multiple myeloma.
A beta-2-microglobulin level of >4.0 mg/L is associated with increased progression to AIDS.