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Specificity of immunoassays. III. Use of two antisera of differing specificities to improve the specificity of steroid immunoassay.
- Source :
-
European journal of nuclear medicine [Eur J Nucl Med] 1979 Jun 01; Vol. 4 (3), pp. 171-7. - Publication Year :
- 1979
-
Abstract
- The specificity of immunoassays can be improved by using a second antiserum to bind substances that cross-react. Both theory and practice show that the effectiveness of the procedure is dependent of the complex interplay of the concentrations of the two antibodies, the concentrations of the three antigens involved (the labelled tracer, the antigen whose concentration is to be measured and the substance that cross reacts) and the affinities of the antibodies for these antigens. Measured cross-reactions can frequently be reduced to zero in the most important concentration ranges thereby enabling one to perform assays upon unpurified materials which other wise would not be possible. Limitations of the method are discussed.
Details
- Language :
- English
- ISSN :
- 0340-6997
- Volume :
- 4
- Issue :
- 3
- Database :
- MEDLINE
- Journal :
- European journal of nuclear medicine
- Publication Type :
- Academic Journal
- Accession number :
- 499238
- Full Text :
- https://doi.org/10.1007/BF00620481