Beta-2-Microglobulin, Urine
Also known as: B2M U
Use
The Beta-2-Microglobulin, Urine test is used to evaluate renal tubular damage and monitor exposure to heavy metals such as mercury and cadmium. It provides essential information for diagnosing and managing conditions affecting kidney function, especially in occupational settings where exposure to metals may occur.
Special Instructions
Patients are advised to void the urinary bladder, then drink a large glass of water (around 500 mL or 17 oz) before collecting a urine specimen within 1 hour. Proper specimen pH adjustment is crucial for accurate results.
Limitations
The accuracy of the test results might be affected by improper specimen collection or handling. The pH of the urine specimen must be adjusted and stabilized between 6-8 to achieve accurate quantification. Certain medications or medical conditions altering urine composition can also interfere with the results.
FDA ApprovedNew York Approved
Methodology
Immunoassay (CLIA)
Biomarkers
LOINC Codes
- 35674-1
- 13485-8
- 2756-5
- 1953-9
Result Turnaround Time
1 day
Related Documents
For more information, please review the documents below
Specimen
Urine
Volume
3 mL
Minimum Volume
1 mL
Container
ARUP Standard Transport Tube
Collection Instructions
Transfer one 3 mL aliquot from a well-mixed random collection to an ARUP Standard Transport Tube. Adjust pH to 6-8 if necessary.
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.
Storage Instructions
Transport specimen frozen.
Causes for Rejection
Improper pH adjustment; unlabeled specimens.
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 8 hours |
| Refrigerated | 48 hours |
| Frozen | 2 months |