ARUP's Laboratory Test Directory
| 0080432: Beta-2 Microglobulin, Urine |
| Test Mnemonic: B2M U | |
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Methodology: Chemiluminescent Immunoassay
Performed: Sun-Sat Reported: Within 24 hours |
| Specimen Required: | |
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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 |
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| CPT Code(s): | |
| 82232 |