Laboratory Medicine and Quality Assurance

Table. 5.

Peer-group coefficients of variation (%) according to the test and trials of general chemistry in 2019

Test Trials
CC-19-01 CC-19-02 CC-19-03 CC-19-04 CC-19-05 CC-19-06 CC-19-07 CC-19-08 CC-19-09 CC-19-10 CC-19-11 CC-19-12
Alanine transaminase 6.5 6.0 7.1 5.5 7.2 5.7 5.4 6.9 5.6 5.6 7.0 5.8
Albumin 4.8 5.4 5.1 5.5 4.9 5.4 5.3 5.2 5.5 5.3 5.2 5.4
Alkaline phosphatase 43.5 35.8 43.3 36.3 45.5 38.1 35.7 42.5 34.6 34.4 42.6 35.8
Amylase 12.6 18.4 12.5 17.5 12.8 18.0 18.6 12.4 18.7 18.2 12.4 18.3
Aspartate aminotransferase 5.5 4.1 5.2 4.3 5.3 4.3 4.2 5.8 4.2 4.6 5.0 4.6
Bilirubin, direct 20.1 16.3 20.5 17.4 17.3 17.1 11.4 18.0 15.1 15.5 18.7 17.2
Bilirubin, total 10.1 6.6 10.4 6.3 10.3 6.2 5.7 10.6 6.3 5.6 9.7 6.0
Calcium 3.9 2.9 4.0 2.8 4.2 2.9 2.7 4.2 2.9 2.6 4.2 2.5
Chloride 3.0 2.8 2.9 2.6 2.0 2.6 2.4 2.3 2.5 2.4 2.1 2.7
Cholesterol, total 3.1 4.7 3.1 4.6 2.9 4.9 4.5 3.0 4.6 4.4 2.8 4.6
Creatine kinase 3.2 4.2 3.3 4.1 3.6 4.2 3.9 2.7 4.0 4.1 3.2 4.1
Creatinine 13.6 7.2 12.1 7.3 11.9 7.3 7.4 12.0 7.2 6.9 17.1 6.7
Gamma-glutamyl transferase 7.7 7.6 7.5 7.9 7.5 7.8 7.8 7.6 7.7 7.8 7.6 7.4
Glucose 3.9 3.1 4.1 2.8 3.9 2.9 2.9 3.7 2.8 2.8 3.5 2.7
High-density lipoprotein cholesterol 11.3 12.2 11.4 12.7 12.1 12.6 12.5 12.9 12.1 12.0 12.3 12.0
Iron 3.3 4.1 3.4 3.4 3.3 3.7 3.6 3.3 3.8 3.9 3.2 4.1
Lactate dehydrogenase 36.9 40.7 37.1 41.6 37.2 41.7 41.5 37.5 41.4 41.4 37.6 41.5
Lipase 10.8 13.7 10.8 14.2 10.0 14.4 14.7 12.4 14.2 19.0 11.7 15.9
Low-density lipoprotein cholesterol 6.1 5.0 6.2 9.6 6.0 5.6 4.7 6.7 4.7 4.5 8.5 4.7
Magnesium 3.4 3.0 3.5 3.3 3.7 2.2 3.1 3.8 3.0 2.0 3.7 2.1
Osmolality 1.5 1.3 1.5 1.1 1.2 1.0 1.0 1.2 1.1 1.0 1.1 1.0
Phosphorus 3.5 2.8 2.3 2.5 2.2 2.3 2.3 2.5 2.4 2.4 2.3 2.8
Potassium 1.9 2.3 1.8 2.4 0.0 2.4 2.2 1.9 2.2 2.1 2.0 2.1
Protein, total 3.4 3.8 3.4 3.8 3.3 3.6 3.5 3.2 3.6 3.6 2.9 3.6
Sodium 1.2 1.3 1.4 1.3 1.2 1.2 1.3 1.4 1.3 1.3 1.4 1.3
Total CO2 6.5 6.5 6.7 5.3 6.0 5.8 5.5 5.9 5.2 5.1 5.5 6.2
Total iron-binding capacity 3.5 3.2 3.6 3.0 3.6 3.1 3.1 3.3 3.2 3.2 3.3 3.6
Triglyceride 3.9 5.9 3.5 5.2 3.8 5.4 5.3 3.8 5.1 5.9 3.6 5.5
Urea nitrogen 4.8 4.2 4.9 4.1 4.8 4.5 4.7 5.0 4.4 4.2 4.7 4.4
Uric acid 3.5 3.6 3.4 3.7 3.4 3.6 3.5 3.3 3.4 3.3 3.4 3.1
Lab Med Qual Assur 2020;42:97~111 https://doi.org/10.15263/jlmqa.2020.42.3.97
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