0080432
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Beta-2-Microglobulin, Urine

B2M U
Example Reports
Abnormal
Normal

Ordering Recommendation

Evaluate renal tubular damage. Monitor exposure to mercury and cadmium.

New York DOH Approval Status

This test is New York state approved.

Specimen Required

Patient Preparation

Void the urinary bladder, then drink a large glass of water (around 500 mL or 17 oz) and collect a urine specimen within 1 hour.

Collect

Random urine.

Specimen Preparation

Transfer one 3 mL aliquot from a well-mixed random collection to an ARUP Standard Transport Tube. (Min: 1 mL)
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.

Storage/Transport Temperature

Frozen

Unacceptable Conditions
Remarks
Stability

Ambient: 8 hours; Refrigerated: 48 hours; Frozen: 2 months

Methodology

Quantitative Chemiluminescent Immunoassay

Performed

Sun-Sat

Reported

Within 24 hours

Reference Interval

Effective February 18, 2014
Test Number
 Components
 Reference Interval
  Beta-2-Microglobulin, Urine 0-300 µg/L
  Beta-2-Microglobulin, ratio to CRT 0-300 µg/g CRT

Interpretive Data



Compliance Category

FDA

Note

Hotline History

N/A

CPT Codes

82232

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Components

Component Test Code* Component Chart Name LOINC
0020207 Creatinine, Urine - per volume 35674-1
0080052 Beta-2-Microglobulin, ratio to CRT 13485-8
0080270 pH, Urine 2756-5
0080435 Beta-2-Microglobulin, Urine 1953-9
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.

Aliases

  • B2 microglobulin
  • Beta-2 Microglobulin, Urine Occupational
  • B2M, Urine Occupational
  • Beta 2 Test
Beta-2-Microglobulin, Urine