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22347 Beta-2 Microglobulin

Beta-2 Microglobulin
Test Code: B2M
Synonyms/Keywords
B2M​, B2MICRO
Useful For
Beta 2 microglobulin levels are useful as predicters of longevity in patients with multiple myeloma, and are useful in monitoring patients who have undergone renal transplants.​
Specimen Requirements
Fasting Required Specimen Type Preferred Container/Tube Acceptable Container/Tube Specimen Volume Specimen Minimum Volume
(allows for 1 repeat)		 Pediatric Minimum Volume
(no repeat)
No​ Serum​ Red Top Tube (RTT)​
Serum Separator Tube (SST)
 0.5 mL​ 0.4 mL​ 0.3 mL​
Specimen Stability Information
Specimen Type Temperature Time
Serum Refrigerate​ 7 days​
Frozen 2 months​
Rejection Criteria
​Plasma samples
Performing Laboratory Information
Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentation
Marshfield​ Monday through Friday​ 6-8 hours​ Turbidimetric method/The Binding Site Optilite analyzer
Reference Range Information
Performing Location Reference Range
Marshfield​ 0.9-2.4 mg/L​
Outreach CPTs
CPT Modifier
(if needed)		 Quantity Description Comments
82232​ ​ ​ ​ ​
Synonyms/Keywords
B2M​, B2MICRO
Ordering Applications
Ordering Application Description
​Centricity ​Beta-2 Microglobulin
​Cerner ​Beta 2 Microglobulin
​COM ​Beta 2 Microglobulin - Blood
If the ordering application you are looking for is not listed, contact your local laboratory for assistance.
Specimen Requirements
Fasting Required Specimen Type Preferred Container/Tube Acceptable Container/Tube Specimen Volume Specimen Minimum Volume
(allows for 1 repeat)		 Pediatric Minimum Volume
(no repeat)
No​ Serum​ Red Top Tube (RTT)​
Serum Separator Tube (SST)
 0.5 mL​ 0.4 mL​ 0.3 mL​
Specimen Stability Information
Specimen Type Temperature Time
Serum Refrigerate​ 7 days​
Frozen 2 months​
Rejection Criteria
​Plasma samples
Useful For
Beta 2 microglobulin levels are useful as predicters of longevity in patients with multiple myeloma, and are useful in monitoring patients who have undergone renal transplants.​
Reference Range Information
Performing Location Reference Range
Marshfield​ 0.9-2.4 mg/L​
For more information visit:
Performing Laboratory Information
Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentation
Marshfield​ Monday through Friday​ 6-8 hours​ Turbidimetric method/The Binding Site Optilite analyzer
For billing questions, see Contacts
Outreach CPTs
CPT Modifier
(if needed)		 Quantity Description Comments
82232​ ​ ​ ​ ​
For most current information refer to the Marshfield Laboratory online reference manual.