RecruitingAccupower ® HBV Performance Evaluation Quant Kit Bioneer Existation FA 96/384As part of the CE marking of a hepatitis B diagnostic kit, the South Korean manufacturer Bioneer wishes to set up a performance study in France in accordance with the IVDR (RE 2017/746). Cerba Xpert CRO of the Cerba Healthcare group promoted this performance study by setting up a prospective collection of blood samples from patients with hepatitis B virus and whose viral load is positive. This prospective collection will be carried out in 3 laboratories of the Cerba Healthcare group.