【摘要】 目的 了解天津地区无偿献血者应用PANTHER单人份核酸检测(ID-NAT)后，联检反应性，鉴别试验阴性(NAT可疑)标本HBV感染情况。方法 本中心2021年1—8月69 362份无偿献血者标本经常规检测和ID-NAT检测后，共检出HBsAg-PANTHER核酸检测联检反应性而鉴别非反应性献血者标本(以下简称NAT可疑标本)66份。采用单纯随机抽样方法选取23份应用超高速离心富集病毒后，采用超敏荧光定量PCR(qPCR)检测HBV DNA,ID-NAT复测鉴别实验，补充电化学发光法乙肝两对半检测。结果 23份NAT可疑标本中经血清学和分子生物学检测共确认HBV DNA阳性14份，HBV感染者抗-HBc阳性率为92.8%。感染者中92.8%(13/14)为隐匿性乙型肝炎病毒感染(OBI)。超敏荧光定量PCR检测共有10份标本获得病毒载量，5份可定量，病毒载量定量(11～464)IU/mL,中位数为15.4 IU/mL。结论 NAT可疑标本中仍能检出60%标本为HBV DNA阳性。抗-HBc检测能排除大多数NAT无法检测到的OBI,应提高目前NAT检测灵敏度，确保输血安全。更多还原

【Abstract】 Objective To explore the HBV infection of initially reactive but discriminatory test non-reactive(NAT suspicious) samples of voluntary blood donors after PANTHER individual nucleic acid testing(ID-NAT) in Tianjin. Methods From January to August 2021, after routine testing and PANTHER ID-NAT, a total of 66 HBsAg-NAT reactive but discriminatory test non-reactive samples(referred to as NAT suspicious samples) were tested from 69 362 blood samples. Among which, 23 samples were selected by simple random sampling method and enriched by ultra-high speed centrifugation. HBV DNA was detected by supersensitive fluorescence quantification PCR(qPCR)and ID-NAT, and electrochemiluminescence was supplemented for two and half pairs of hepatitis B detection. Results Among 23 suspicious NAT samples, 14 were confirmed HBV DNA positive by serological and molecular biological tests, and the anti-HBc positive rate of HBV infected individuals was 92.8%. 92.8%(13/14) of the infected individuals were occult hepatitis B virus infection(OBI). A total of 10 samples were detected for viral load by qPCR, of which 5 were quantifiable, with viral load of(11～464) IU/mL and a median of 15.4 IU/mL. Conclusion 60% of the NAT suspicious samples were detected as HBV DNA positive. Anti-HBc testing can exclude most OBI undetectable by NAT, and the sensitivity of NAT should be improved to ensure the safety of blood transfusion.更多还原