The AccuSet™ HBsAg Low Titer Performance Panel is a 20-member validation panel of undiluted, naturally occurring plasma samples (1 vial per member, 1.5 mL per vial). Panel members represent bleeds from multiple individuals positive for hepatitis B antigen. Each sample represents a single collection event. No preservatives were added. Test results from commercially available HBV assays are included for characterization of the panel members. This panel of human plasma samples demonstrates low titer reactivities of hepatitis B antigen. One sample is included as a non-reactive sample and is negative for applicable HBV test methods performed.