Laboratory Medicine and Quality Assurance

Table. 1.

Number of laboratories that participated in each proficiency test from 2016 to 2021

Test Company Year % change*

2016 2017 2018 2019 2020 2021

1st 2nd 1st 2nd 1st 2nd 1st 2nd 1st 2nd 1st 2nd
HBV (quantitative) All 111 109 118 118 116 116 116 114 113 117 117 117 5.4
Roche 68 67 70 71 74 75 74 72 74 77 75 78
Abbott 24 24 24 25 23 22 24 24 23 25 26 25
LG Lifescience 8 7 9 8 6 6 6 6 6 6 7 6
Bioneer 6 5 5 5 4 4 2 2 2 2 2 2
Biosewoom 3 4 7 7 7 7 8 8 7 6 6 5
Others 2 2 3 2 2 2 2 2 1 1 1 1
HCV (quantitative) All 65 65 70 71 71 71 71 71 71 72 70 71 9.2
Roche 49 49 51 52 53 53 53 53 55 55 54 55
Abbott 15 15 16 16 15 15 16 16 14 15 14 14
Bioneer - - - - - - 1 1 1 1 1 1
Biosewoom - - 1 1 1 1 1 1 1 1 1 1
Others - - 2 2 2 2 - - - - - -
HBV (qualitative) All 10 10 14 14 12 12 12 11 10 11 12 11 10.0
Roche 6 7 9 9 7 7 8 8 7 8 9 9
LDT 2 1 1 1 1 1 2 2 2 2 2 1
Biocore 1 1 1 1 - - - - - - - -
Bioneer - - 1 1 1 1 - - - - - -
Others 1 1 2 2 3 3 2 1 1 1 1 1
HCV (qualitative) All 20 20 21 21 19 18 19 18 15 16 17 16 –20.0
Roche 11 11 14 14 10 10 13 13 10 10 12 12
Abbott 5 5 5 5 5 5 3 3 3 3 3 3
Others 2 2 2 2 4 3 2 1 1 2 1 1
Biosewoom 1 1 - - - - - - - - - -
LDT 1 1 - - - - 1 1 1 1 1 -
HBV DNA drug resistance mutation (Adefovir) All 11 14 14 15 16 13 14 14 13 13 12 11 0.0
LDT 4 6 6 9 9 6 8 8 8 9 8 7
Others 5 5 4 4 4 4 4 4 4 3 3 3
Biosewoom 1 2 3 2 3 3 2 2 1 1 1 1
Genematrix 1 1 1 - - - - - - - - -
HBV DNA drug resistance mutation (Entecavir) All 14 14 14 15 16 15 14 14 13 13 13 12 –14.3
LDT 6 6 6 9 9 8 8 8 8 9 9 8
Others 5 5 4 4 4 4 4 4 4 3 3 3
Biosewoom 2 2 3 2 3 3 2 2 1 1 1 1
Genematrix 1 1 1 - - - - - - - - -
HBV DNA drug resistance mutation (Lamivudine) All 14 14 14 15 16 15 14 14 13 13 13 12 –14.3
LDT 6 6 6 9 9 8 8 8 8 9 9 8
Others 5 5 4 4 4 4 4 4 4 3 3 3
Biosewoom 2 2 3 2 3 3 2 2 1 1 1 1
Genematrix 1 1 1 - - - - - - - - -

The instruments used were from the following companies: Roche (Basel, Switzerland), Abbott (Abbott Park, IL, USA), LG Lifescience (Seoul, Korea), Bioneer (Daejeon, Korea), Biosewoom (Seoul, Korea), and Genematrix (Seongnam, Korea).

Abbreviations: HBV, hepatitis B virus; HCV, hepatitis C virus.

*2021-2nd vs. 2016-1st.

Lab Med Qual Assur 2022;44:191~198 https://doi.org/10.15263/jlmqa.2022.44.4.191
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