pISSN 2234-3806eISSN 2234-3814
Table. 2.
Intra- and inter-run precision and trueness
| C-peptide | Target value (ng/mL) | Precision | Trueness | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Intra-run (N=5) | Inter-run (N=20) | ||||||||
| Mean (ng/mL) | % CV | Mean (ng/mL) | % CV | Mean (ng/mL) | % Bias | ||||
| CRM 6901-C 104±5 ng/mL (1/200 dilution) | 0.52 | 0.50 | 4.8 | 0.52 | 4.5 | 0.52 | 0.6 | ||
| CRM 6901-C 104±5 ng/mL (1/100 dilution) | 1.04 | 1.03 | 3.6 | 1.07 | 4.3 | 1.05 | 1.0 | ||
| CRM 6901-C 104±5 ng/mL (1/10 dilution) | 10.40 | 10.74 | 4.2 | 10.66 | 3.8 | 10.72 | 3.1 | ||
Abbreviation: CRM, certified reference material.
Ann Lab Med 2025;45:62~69 https://doi.org/10.3343/alm.2024.0072
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