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Table. 1.

Table. 1.

Allowable limits of performance in the RCPAQAP general serum chemistry programs*

Analyte Unit Fixed deviation To TAE Harmonization medical impact/status
AST U/L 5 40 12% Medium/Incomplete
ALT U/L 5 40 12% Medium/Incomplete
ALP U/L 15 125 12% Medium/Incomplete
ALB g/dL 0.2 3.3 6% Medium/Needed
TP g/dL 0.3 6 5% Medium/Incomplete
Na mmol/L 3 150 2% High/Adequate, Maintain
K mmol/L 0.2 4.0 5% High/Adequate, Maintain
Cl mmol/L 3 100 3% High/Adequate, Maintain
Ca mg/dL 0.40 10.0 4% High/Adequate, Maintain
P mg/dL 0.57 7.12 8% Medium/Adequate, Maintain
Chol mg/dL 11.6 193.3 6% High/Adequate, Maintain
Cr mg/dL 0.09 1.13 8% High/Adequate, Maintain

*These parameters were used as the acceptance criteria and allowable limits for the within-laboratory comparability verification of multiple instruments. The allowable limits have fixed deviations (+/−) from the target or consensus values up to a particular value (To) and proportional deviations (TAE) at higher values.

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; TAE, total allowable error; RCPAQAP, Royal College of Pathologists of Australasia Quality Assurance Program.

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

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