Table 3

Interlaboratory testing of samples with discrepant serologic results, performed to resolve discrepancies (+, positive; −, negative).

Patient ID*Time since procedure Testing site Antigen and methodResult#
6062 4.6 monthsQ-One p30, virus +
CDC Infected 293
CDCp30§ **
Q-One Infected 293| +
Q-One p30 Weak +
11.6 months Q-One p30, virus +
CDC Infected 293
605273.2 months Q-One p30, virus Weak +
CDC Infected 293
Q-OneInfected 293|
Q-One p30, virus
CDC p30, virus§
80.2 months Q-One p30, virus
CDC Infected 293
CDC p30, virus
8004 3 days CDC Infected 293 Weak +
72.1 months CDC Infected 293 Weak +
Q-One p30, virus
10018 1 day CDC Infected 293 Weak +
58.9 months CDC Infected 293 Weak +
Q-One p30, virus
  • * ID codes: 6xxx, Russia (ECSP); 8xxx, Sweden (pancreatic islet cells); 10xxx, USA (HepatAssist device).

  • Q-One method as described.

  • CDC method as described.

  • § Q-One antigen, but using CDC methodology.

  • | CDC antigens, but using Q-One methodology.

  • Q-One p30 antigen, but using modified Q-One methodology (more stringent washes and altered incubation conditions).

  • # Repeat testing samples were repeatedly frozen and thawed.

  • ** Q-One antigen, but using modified CDC methodology (more stringent washes and extended incubation).