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KMID : 1148920110450010015
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Nuclear Medicine and Molecular Imaging
2011 Volume.45 No. 1 p.15 ~ p.20
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Quantitative Measurement of Serum Hepatitis B Surface Antigen Using an Immunoradiometric Assay in Chronic Hepatitis B
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Kwon Hyun-Woo
Lee Ho-Young
Kim Seog-Gyun
Kim Won
Jung Yong-Jin
Kang Keon-Wook
Chung June-Key
Lee Myung-Chul
Lee Dong-Soo
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Abstract
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Purpose: Measurement of serum hepatitis B virus surface antigen (HBsAg) levels is important for the management of chronic hepatitis B patients in terms of monitoring response to antiviral therapy. This study aimed to evaluate the diagnostic performance of a new diagnostic kit, which quantitatively measures serum HBsAg level using an immunoradiometric assay (IRMA)-based method. Measurements were compared with those obtained using a chemiluminescent microparticle immunoassay (CMIA)-based method.
Methods: The blood samples of 96 patients with chronic hepatitis B were used in this study. Copy numbers of serum hepatitis B virus (HBV) DNA were determined in 23 of these samples. The correlation between and the concordance of IRMA and CMIA results were determined using Pearson’s correlation coefficients. P values of 0.05 were considered to be statistically significant throughout.
Results: Laboratory diagnoses based on IRMA were wholly in agreement with those based on CMIA. Furthermore, serum HBsAg levels by IRMA were found to be highly correlated with those determined by CMIA (correlation coefficient R2 = 0.838, p?
Conclusion: The diagnostic performance of the investigated IRMA method of determining HBsAg levels was found to be comparable with that of a CMIA-based method in chronic hepatitis B patients.
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KEYWORD
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Hepatitis B virus surface antigen, Immunoradiometric assay, Chronic hepatitis B, Chemiluminescent microparticle immunoassay
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