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Table. 3.

Table. 3.

Inter-instrument CV (%) and ratio to allowable bias

Analytes Measured results without conversion action Original results before conversion action Converted results after conversion action Allowable bias*
AST 4.3 (0.8) 8.6 (1.7) 4.9 (1.0) 5.1
ALT 3.2 (0.3) 17.0 (1.5) 7.4 (0.7) 11.1
ALP 3.5 (0.8) 6.0 (1.4) 4.0 (0.9) 4.3
ALB 2.0 (0.6) 4.0 (1.3) 2.4 (0.8) 3.2
TP 1.3 (0.7) 1.5 (0.8) 1.0 (0.5) 2.0
Na 0.8 (1.0) 1.2 (1.5) 0.7 (0.9) 0.8
K 1.3 (0.7) 1.3 (0.7) 0.8 (0.4) 1.9
Cl 0.6 (0.4) 1.3 (0.9) 0.9 (0.6) 1.4
Ca 1.0 (0.5) 3.6 (1.8) 1.5 (0.8) 2.0
P 2.1 (0.8) 4.6 (1.6) 3.0 (1.1) 2.8
Cr All converted 5.8 (1.3) 4.5 (1.0) 4.4
Chol All converted 2.1 (0.6) 1.7 (0.5) 3.4

*Allowable limits for bias according to European recommendations adopted from Baadenhuijsen, et al. [16].

Abbreviations: AST, aspartate transaminase; ALT, alanine aminotransferase; ALP, alkaline phosphatase; ALB, albumin; TP, total protein; Na, sodium; K, potassium; Cl, chloride; Ca, calcium; P, phosphate; Chol, cholesterol; Cr, creatinine.

Ann Lab Med 2022;42:150~159 https://doi.org/10.3343/alm.2022.42.2.150

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