Table 2.

Performance of the MWP-AM and Cobas-AM

Sample no.Input HBV DNA (copies/ml)MWP-AMCobas-AM
MeanaCV (%)bMeanaCV (%)b
21000NAf241 (290)c112
320067 (400)d25431157
4400253 (507)e11967533
5825833431,73816
61,6501,620272,99323
73,3003,107946,13522
86,6007,233119,65816
913,30015,5931219,73312
1026,50022,7878.536,7506.5
1153,00039,0601666,50017
12106,00066,10719111,1677.6
13212,000151,82714171,66711
  • a Mean of six analyses (duplicate analyses performed on 3 consecutive days), with nonreactive results set as 0 copies/ml; mean for reactive results only is given within parentheses).

  • b Nonreactive results set as 0 copies/ml.

  • c One of six analyses yielded nonreactive results.

  • d Five of six analyses yielded nonreactive results.

  • e Three of six analyses yielded nonreactive results.

  • f NA, not applicable.