Synonyms
- Beta-2 Microglobulin, Urine
Expected Turnaround Time
3 - 4 days
Turnaround time is defined as the usual number of days from the date of pickup of a specimen for testing to when the result is released to the ordering provider. In some cases, additional time should be allowed for additional confirmatory or additional reflex tests. Testing schedules may vary.
Related Information
Related Documents
Specimen Requirements
Specimen
Urine (random)
Volume
10 mL
Minimum Volume
1 mL (Note: This volume does not allow for repeat testing.)
Container
Plastic urine container (do not acidify)
Collection
Patient should empty the bladder, then drink a large glass of water and collect a urine sample within one hour. Significant loss of β2-microglobulin activity may occur in acidic urine (pH ≤6). Urine should always be collected at high diuresis and the pH adjusted to between 6 and 8 with 1 mol/L sodium hydroxide.
Storage Instructions
Refrigerate.
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Refrigerate |
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Refrigerate. |
Stability Requirements
| Temperature | Period |
|---|---|
| Room temperature | 7 days |
| Refrigerated | 7 days |
| Frozen | 14 days |
| Freeze/thaw cycles | Stable x3 |
Causes for Rejection
Fetal urine sample received
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|
|
Fetal urine sample received |
Test Details
Use
Evaluate renal disease; monitor certain types of malignancies and AIDS
Limitations
This test has not been validated for the measurement of osmolality of fetal urine.
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|
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This test has not been validated for the measurement of osmolality of fetal urine. |
Methodology
Immunochemiluminometric assay (ICMA)
Reference Interval
0−300 μg/L
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