Laboratory Medicine and Quality Assurance

Table. 2.

The results of two major subgroups in positive control materials during the 2021 2nd external quality assessment program

Test Reagent No. Material with lower concentration Material with higher concentration

Median Mean±SD CV (%) Median Mean±SD CV (%)
HBV (quantitative) All 117 208 213.7±43.9 20.5 415,000 428,505.4±126,834.6 29.6
Roche 78 208 206.6±32.8 15.9 437,500 469,937.7±106,705.9 22.7
COBAS 4800 HBV 19 223 223.8±15.8 7.1 629,000 622,315.8±64,045.2 10.3
COBAS 6800 HBV 19 219 216.7±24.1 11.1 422,000 410,111.1±45,937.2 11.2
COBAS TaqMan 40 189 190.9±33.2 17.4 417,000 416,836.8±56,073.5 13.5
Abbott 25 246 248.3±48.2 19.4 354,085 361,497.7±132,628.4 36.7
Alinity M HBV Assay 6 244 - - 502,127 - -
HBV Real-time PCR Kit 19 246 248±44.6 18.1 274,885 294,581.7±73,056.7 24.8
HCV (quantitative) All 71 150 155.2±57.6 37.1 63,035 67,224.3±21,698.8 32.3
Roche 55 171 169.1±62.8 37.1 71,600 70,834.8±25,203.9 35.6
COBAS 4800 HBV 14 104 122.3±49.8 40.7 93,550 93,115.4±15,899.3 17.1
COBAS 6800 HBV 15 146 142.5±28.1 19.7 84,700 84,160.0±11,751.9 14.0
COBAS TaqMan 26 213 204.0±51.9 25.4 47,168 46,892.3±4,924.8 10.5
Abbott 14 113 116.1±34.3 29.6 59,632 61,784.9±13,282.2 21.5
Alinity M HCV Assay 5 127 - - 74,235 - -
HCV Real-time PCR Kit 9 110 - - 55,140 - -

The instruments used were from the following companies: Roche (Basel, Switzerland) and Abbott (Abbott Park, IL, USA).

Abbreviations: SD, standard deviation; CV, coefficient of variation; HBV, hepatitis B virus; HCV, hepatitis C virus.

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