Serum Beta-2 Microglobulin Pretreatment Level
Notes
**Note 1:** Serum microglobulin is part of the Revised International Staging (RISS). Use the cut points listed in the table below regardless of the lab's reference range. **Note 2:** Record this data item based on a blood test performed at diagnosis (pre-treatment). In the absence of the lab test, a physician's statement of the exact value can be used. Use the highest value available. **Note 3:** If there is no mention of the serum beta-2 microglobulin, code 9.Default
9NAACCR Item
NAACCR #3931Metadata
SSDI| Code | Description |
|---|---|
| 0 | β2-microglobulin < 3.5 mg/L |
| 1 | β2-microglobulin ≥ 3.5 mg/L < 5.5 mg/L |
| 2 | β2-microglobulin ≥ 5.5 mg/L |
| 7 | Test ordered, results not in chart |
| 9 | Not documented in medical record Serum Beta-2 Microglobulin Pretreatment Level not assessed or unknown if assessed |