ARUP's Laboratory Test Directory

0080432: Beta-2 Microglobulin, Urine

Test Mnemonic: B2M U
Methodology: Chemiluminescent Immunoassay

Performed: Sun-Sat

Reported: Within 24 hours

Specimen Required:  
Collect: Random urine.

Transport: One 4 mL aliquot from a well-mixed random collection, frozen. (Min: 1 mL) Submit specimen in an ARUP Standard Transport Tube.

Pediatric Collection/Transport: 2 mL aliquot from a well-mixed random collection, frozen. (Min: 0.4 mL)

Remarks: If pH is > 8, lower pH to 6-8 by adding 1M HCL. If pH < 6, increase pH to 6-8 by adding 5% NaOH. Titrate with appropriate preservative until pH of 6-8 has been reached.  Please record the pH on the transport tube and test request form.  For random collection, have patient empty bladder, drink a large glass of water, then collect a urine specimen within 1 hour.

Stability: Ambient: 8 hours; Refrigerated: 2 days; Frozen: 2 months

Reference Interval:
 
Test Number Components Reference Interval
 Beta-2-Microglobulin, Urine 0-160 µg/L
 Beta-2-Microglobulin per gram of creatinine0-300 µg/g crt

CPT Code(s):
82232

 

 

 
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