The AccuSpan HBsAg Sensitivity Panel is a 15-member panel composed of two sets of dilution series of HBsAg subtypes ad and ay. Each dilution series consists of seven members representing serial two-fold dilutions of positive serum, with established reactivity for each HBsAg subtype, diluted in negative diluent. The panel also includes a negative member prepared from the negative diluent. The diluent was prepared from pooled normal human serum non-reactive for HBsAg that was filtered through a 0.2-micron filter. Each member contains a preservative (0.1% ProClin 300). For Research Use Only. Not for use in diagnostic procedures. Reference number: PHA809