目的 对抗丁型肝炎病毒（HDV）IgG试剂（化学发光法）的性能进行评价。 方法 用基于磁微粒化学发光免疫分析平台的抗-HDV IgG试剂、厦门万泰凯瑞抗-HDV IgG试剂（国产试剂A）、基于酶联免疫吸附法的北京万泰抗-HDV IgG试剂（国产试剂B）和基于荧光定量PCR检测平台的HDV RNA试剂分别对1 909例乙型肝炎表面抗原（HBsAg）阳性样本进行检测，并结合检测的阴/阳性结果评价3种抗体试剂的特异度和正确率之间的差异；同时，参照美国临床和实验室标准化协会的EP5-A2文件，采用高、中和低3个浓度水平的阳性样本对抗-HDV IgG试剂进行精密度评价。用抗-HDV IgG试剂对545份HBsAg阳性且HDV IgG阴性样本和北京大学肝炎试剂研究中心的200份甲型肝炎病毒IgM抗体（HAV IgM）阳性样本、350份丙型肝炎病毒抗体（anti-HCV）阳性样本、200份健康人体检样本进行检测，以评价抗-HDV IgG试剂的特异性。最后，用抗-HDV IgG试剂与国产试剂A测试545例HBsAg阳性且抗-HDV IgG阴性样本和37例抗-HDV IgG阳性样本，对抗-HDV IgG试剂的符合率进行评价。 结果 4种试剂在对1 909份HBsAg阳性样本的检测中，筛查到19份抗-HDV IgG真阳性样本；抗-HDV IgG试剂的正确率和特异度较好；抗-HDV IgG试剂对高、中和低3个水平样本检测的批内精密度CV值在1.57%~4.30%之间，批间精密度CV值在1.71%~4.67%之间，精密度良好；与国产试剂A进行比较，阴/阳性符合率一致。 结论 本研究中抗-HDV IgG试剂（化学发光法）对临床样本的检测具有较高特异度，表现出与商品化试剂一致的符合率，可用于HBsAg阳性样本中抗-HDV IgG的筛查。 Objective This study evaluates the performance of chemiluminescence assay, which is designed to detect Hepatitis D Virus (HDV) Immunoglobulin G (IgG) antibodies. Methods A comparative analysis was conducted among chemiluminescence anti-HDV IgG reagent, the magnetic particle-based domestic reagent A and domestic reagent B, and the Robo Gene HDV RNA kit, using 1909 HBsAg-positive plasma samples. This comparison aimed to delineate clinical specificity and detection accuracy. The anti-HDV IgG reagent precision was assessed at three different concentration levels following the Clinical Laboratory Standards Institute EP5-A2 guidelines. The specificity of the assay was validated using 200 HAV IgM positive, 545 HBsAg-positive but anti-HDV IgG-negative, 350 anti HCV positive plasma samples and 200 healthy human blood samples. Additionally, a concordance study was conducted with 545 HBsAg-positive and 37 anti-HDV IgG-positive plasma samples, comparing the anti-HDV IgG reagent against reagent A. Results 1 909 HBsAg-positive plasma samples were tested using 3 anti HDV IgG reagent and 1 HDV RNA reagent, 19 samples were identified as anti-HDV IgG-positive. The anti-HDV IgG demonstrated superior accuracy and specificity. The assay exhibited excellent precision, with intra-assay coefficient of variation (CV) values ranging from 1.57% to 4.30%, and inter-assay CV values between 1.71% and 4.67% for detecting samples at high, medium, and low concentration levels. Concordance with Reagent A showed consistent results in both positive and negative detections. Conclusion In this study, the anti-HDV IgG reagent (chemiluminescence method) displayed outstanding specificity in detecting clinical samples and exhibited a high conformity rate with commercialized reagents, making it potentially suitable for screening anti-HDV IgG in HBsAg-positive samples.
Evaluation of chemiluminescence immunoassay kit for detection of hepatitis D virus IgG antibody
Objective This study evaluates the performance of chemiluminescence assay, which is designed to detect Hepatitis D Virus (HDV) Immunoglobulin G (IgG) antibodies. Methods A comparative analysis was conducted among chemiluminescence anti-HDV IgG reagent, the magnetic particle-based domestic reagent A and domestic reagent B, and the Robo Gene HDV RNA kit, using 1909 HBsAg-positive plasma samples. This comparison aimed to delineate clinical specificity and detection accuracy. The anti-HDV IgG reagent precision was assessed at three different concentration levels following the Clinical Laboratory Standards Institute EP5-A2 guidelines. The specificity of the assay was validated using 200 HAV IgM positive, 545 HBsAg-positive but anti-HDV IgG-negative, 350 anti HCV positive plasma samples and 200 healthy human blood samples. Additionally, a concordance study was conducted with 545 HBsAg-positive and 37 anti-HDV IgG-positive plasma samples, comparing the anti-HDV IgG reagent against reagent A. Results 1 909 HBsAg-positive plasma samples were tested using 3 anti HDV IgG reagent and 1 HDV RNA reagent, 19 samples were identified as anti-HDV IgG-positive. The anti-HDV IgG demonstrated superior accuracy and specificity. The assay exhibited excellent precision, with intra-assay coefficient of variation (CV) values ranging from 1.57% to 4.30%, and inter-assay CV values between 1.71% and 4.67% for detecting samples at high, medium, and low concentration levels. Concordance with Reagent A showed consistent results in both positive and negative detections. Conclusion In this study, the anti-HDV IgG reagent (chemiluminescence method) displayed outstanding specificity in detecting clinical samples and exhibited a high conformity rate with commercialized reagents, making it potentially suitable for screening anti-HDV IgG in HBsAg-positive samples.
Hepatitis DHepatitis D Virusanti-HDV IgGChemiluminescence method
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