Beta-2 microglobulin, urine

Alphabetical Test listing

Beta-2 microglobulin, urine-994

Test name:

Test number:

994

Excellian order number:

LAB994

Abbreviation:

MSO

Alternate names:

β-2 microglobulin, urine
Beta-2-microglobulin
B2M
B2-M
B-2
B-2 Microglobulin
B2 Microglobulin
Beta 2 microglobulin

Useful for:

Evaluate renal disease
Monitor certain types of malignancies and AIDS

Patient preparation information:

Patient should empty the bladder, then drink a large glass of water and collect a urine sample within 1 hour.

Specimen type:

Urine, random

Collection container:

Screw cap plastic container (sterile)

Volume:

10 mL

Minimum volume:

1.0 mL

Processing instructions:

Significant loss of B(2)-microglobulin activity may occur in acidic urine (pH ≤6).
Urine should always be collected at high diuresis and the pH adjusted to between 6 and 8 with 1 mol/L sodium hydroxide (NaOH).

Transport container:

Screw cap plastic container (sterile)

Transport and stability:

Refrigerated (preferred) - 7 days

Ambient - 7 days

Frozen - 14 days

Freeze/thaw cycles - stable x3

Performing lab:

LabCorp Burlington (010173): R-NX

Days set up:

Mo - Fr

TAT:

5 days

Method:

Immunochemiluminometric assay (ICMA)

Reference ranges:

0 - 300 μg/L

CPT codes:

82232

LOINC code:

Result 1953-9

Date created:

05/31/2019

Revised date:

03/17/2022

Review date:

02/20/2024