Calibration Verification: Recovery and Reportable Range (CLIA)
Calibration verification recovery at each level against the laboratory's limit, with reportable range coverage.
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- One level per line
- 10, 10.2 100, 98 250, 254 500, 512
- Laboratory's acceptable recovery limit
- 3
- Reportable range, low end
- 10
- Reportable range, high end
- 500
Result: All 4 levels within ±3% recovery.
The tool opens with these values already filled in. Replace them with your own.
What you enter
- One level per line: assigned value, measured value
- Laboratory's acceptable recovery limit (± %)
- Reportable range, low end (optional)
- Reportable range, high end (optional)
How this is calculated
Citation
42 CFR 493.1255(b): calibration verification with the laboratory's own limits, at a minimal (or zero), a mid-point and a maximum value, at least every 6 months. Recovery and the least-squares line are stated arithmetic. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.