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Table. 1.

Table. 1.

Mean percentage bias according to analytical performance criteria

Test item Mean percentage bias (95% CI) according to different criteria

Optimum Desirable Minimum Outcome-based Unacceptable
HbA1c 0.6 (0.6–0.6) 1.0 (1.0–1.0) 1.6 (1.6 –1.7) 2.6 (2.5–2.6) 8.8 (8.6–9.1)
Cr 1.8 (1.7–1.9) 3.1 (3.0–3.3) 4.3 (4.1–4.5) 20.0 (19.1–20.9)
TC 1.7 (1.6–1.7) 2.1 (2.0–2.2) 2.1 (2.1–2.2)
TG 2.9 (2.8–3.1) 3.0 (2.8–3.1)
AFP 5.6 (5.4–5.7) 6.4 (6.2–6.6) 6.5 (6.2–6.7) 79.6 (49.3–109.9)
PSA-Hybritech calibrator 3.9 (3.0–4.7) 7.4 (6.7–8.0) 8.4 (7.8–9.0) 28.8 (23.8–33.8)
PSA-WHO calibrator 3.7 (3.5–4.0) 6.4 (6.3–6.6) 7.3 (7.1–7.5) 28.3 (26.5–30.1)

Abbreviations: Cr, creatinine; CI, confidence interval; TC, total cholesterol; TG, triglyceride; AFP, alpha-fetoprotein; PSA, prostate-specific antigen.

Ann Lab Med 2023;43:425~433 https://doi.org/10.3343/alm.2023.43.5.425

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