TABLE 1.

Quantitative differences in samples of >300,000 IU/ml assayed diluted and undiluted in the COBAS Amplicor HCV Monitor version 2.0

HCV RNA levela (IU/ml)% (no./total) of samples with quantitative differencesb of:
>0.5 log unit>0.75 log unit>1.0 log unit
300,000-600,00031 (15/48)8 (4/48)0 (0/48)
600,000-850,00053 (18/34)18 (6/34)12 (4/34)
850,000-12,000,00056 (62/110)15 (17/110)3 (3/110)
  • a All measurements were performed using the COBAS Amplicor HCV Monitor version 2.0 assay. Samples were assayed undiluted and diluted 1:50.

  • b log10 international units per milliliter differences determined as log10 international units per milliliter diluted minus log10 international units per milliliter undiluted.