Ordering Recommendation
Evaluate renal tubular damage. Monitor exposure to mercury and cadmium.
Mnemonic
B2M U
Methodology
Quantitative Chemiluminescent Immunoassay
Performed
Sun-Sat
Reported
Within 24 hours
New York DOH Approval Status
This test is New York DOH 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
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
Components
Component Test Code* | Component Chart Name | LOINC |
---|---|---|
0020207 | Creatinine, Urine - per volume | 2161-8 |
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
- B2M, Urine Occupational
- Beta 2 Test
- Beta-2 Microglobulin, Urine Occupational
Beta-2-Microglobulin, Urine