Beta-2-Microglobulin, Urine
Test Mnemonic
URB2M
CPT Codes
- 82232 - QTY (1)
Includes
- Creatinine, Urine - per volume
- Beta-2-Microglobulin, Urine
- Beta-2-Microglobulin, ratio to CRT
- pH, Urine
Performing Laboratory
ARUP
Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 3 mL | Urine, random | Clean container | Frozen | Patient preparation: Void the urinary bladder, then drink a large glass of water and collect a urine specimen within 1 hour. Laboratory instructions: If pH is >8, lower pH to 6-8 with 1 M HCL. If pH <6, increase to 6-8 with 5% NaOH. Record the pH on the transport tube and ship frozen. |
Minimum Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 1 mL |
Stability
| Environmental Condition | Description |
|---|---|
| Ambient | 8 hours |
| Refrigerated | 48 hours |
| Frozen | 2 months (after pH has been adjusted to 6-8) |
Days Performed
Sun - Sat
Turnaround Time
1 - 2 days
Methodology
| Name | Description |
|---|---|
| Chemiluminescence Immunoassay (CLIA) |
Reference Range
| Beta-2-Microglobulin, Ur ug/L | |||||
|---|---|---|---|---|---|
| Sex | Age From | Age To | Type | Range | Range Unit |
| Years | 99 Years | Normal | 0 - 300 | ug/L | |
| Beta-2-MicroglobulinRatio to CRT | |||||
| Sex | Age From | Age To | Type | Range | Range Unit |
| Years | 99 Years | Normal | 0 - 300 | ug/g crt |
Special Info
Patient preparation: Void the urinary bladder, then drink a large glass of water and collect a urine specimen within 1 hour. Laboratory instructions: If pH is >8, lower pH to 6-8 with 1 M HCL. If pH <6, increase to 6-8 with 5% NaOH. Record the pH on the transport tube and ship to referral laboratory frozen.
Clinical Info
This test is can be useful in evaluation of renal tubular damage or to monitor exposure to mercury and cadmium.