Detection of Hepatitis B Surface Antigen (HBs Ag) with Use of Alkaline Phosphatase-Labeled Antibody to HBs Ag
An enzyme-labeled “sandwich” assay was developed for the detection of the hepatitis B surface antigen (HBs Ag) with use of calf intestinal alkaline phosphatase and horse antibody to HBs Ag. It involved a total incubation time of 2.5 hr in three steps and was approximately equivalent in sensitivity t...
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Published in | The Journal of infectious diseases Vol. 136; no. Supplement-2; pp. S318 - S323 |
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Main Authors | , |
Format | Journal Article |
Language | English |
Published |
United States
The University of Chicago Press
01.10.1977
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Subjects | |
Online Access | Get full text |
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Summary: | An enzyme-labeled “sandwich” assay was developed for the detection of the hepatitis B surface antigen (HBs Ag) with use of calf intestinal alkaline phosphatase and horse antibody to HBs Ag. It involved a total incubation time of 2.5 hr in three steps and was approximately equivalent in sensitivity to one of the commercially available radioimmunoassays. The confirmatory test was of the neutralization type and required an additional 30-min incubation step. The enzyme-labeled antibody solution and the solid-phase antibody were extremely stable. They withstood storage at 2 C–8 C for longer than one year with virtually no decrease in activity. Accelerated tests of stability in storage at room temperature (20 C–24 C) showed only a small loss of potency over a one-year period. Three specimens were encountered that were confirmably positive by enzyme-labeled immunoassay but negative by radioimmunoassay. |
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Bibliography: | istex:98A5B22A6E66E4889091191D90C5146425C2A77E ark:/67375/HXZ-50GPJW0L-5 Please address requests for reprints to Dr. Seymour P. Halbert, Cordis Laboratories, 2140 North Miami Avenue, Miami, Florida 33137. ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 0022-1899 1537-6613 |
DOI: | 10.1093/infdis/136.Supplement_2.S318 |