Beta-2-Microglobulin
Label Mnemonic: B2MUR
Epic Lab Code: LAB569
Downtime Form: A-1a Miscellaneous Request
Commercial Mail-out Laboratory
5231 RCP
356-8593
Specimen(s):
Random Urine
Specimen Instructions:
For random collection, have patient empty bladder, drink a large glass of water, then collect a urine specimen within 1 hour.

Core Lab processing instructions:
If pH is greater than 8, lower pH to 6-8 by adding 1M HCL. If pH less than 6, increase pH to 6-8 by adding 5% NaOH. Titrate with appropriate preservative until pH of 6-8 has been reached. Record the pH on the transport tube and test request form.
Collection Medium:
Yellow top round bottom tube (no additive)
Minimum:
Adult/Pediatric Preferred Minimum: 3 mL random urine
Turn Around Time:
24 hours upon receipt at reference laboratory
Reference Range:
Beta-2-Microglobulin, Urine 0-300 μg/L Beta-2-Microglobulin, ratio to CRT 0-300 μg/g CRT
Methodology:
Quantitative Chemiluminescent Immunoassay
CPT Code:
82232