Test Overview
Clinical Utility
Increased in B-cell malignancies and glomerular dysfunction; also non-specifically increased in inflammatory diseases and some malignancies
Method
Immunoturbidimetry
Method Description
Turbidimetric assays not suitable for measurement of highly lipemic or hemolytic samples or samples containing high levels of circulating immune complexes.
Result Included
β-2-Microglobulin
Specimen
Specimen Type
Serum or Plasma (LiHep)Containers
Collection Containers
Green top (lithium heparin); Gold top (clot activator & gel); Red top (no additive)
Volume
Sample Volume
1 mL
Specimen Comment
Fasting non-hemolyzed specimen preferred due to assay interferences.
Pediatric
Volume
2 mL
Minimum
0.5 mL
Comment
<b>0-2 years:</b> 0.5 mL Green top (Li- Heparin) Microtainer<br><b>2-10 years:</b> 2 mL Green top (Li-Heparin) Vacutainer tube
Patient Preparation
Fasting preferred
Collection & Handling
Collection Instructions
Avoid hemolysis
Handling Information
Store and send frozen.
Stability
| Refrigerated | Frozen |
|---|---|
| 3 days | 180 days |
Performance & Interpretation
Turnaround Time
5 days
Results
Name
Units
Reference Range
Conversion
-
β-2-Microglobulin, Serummg/L0.80 - 2.20nmol/L x 0.0118
Referral Location
Canada
Test Version
Last Updated
2024-02-07