Label modified immunoassays

Details Label modified immunoassays Label modified immunoassays

1977-07-14

1980-06-17

Wiseman, Thomas G.

Chemistry: molecular biology and microbiology

Measuring or testing process involving enzymes or...

Involving antigen-antibody binding, specific binding protein...

23230B, 424 8, 424 12, G01N 3114, G01N 2122, G01N 3316

Patent

active

042084792

ABSTRACT:
Methods and reagents are provided for immunoassays employing as reagents a labelled receptor, where the label is capable of providing a detectable signal, and modifying reagents, capable of modifying the signal obtained from the label. When ligand (ligand analog for monoepitopic ligands) is present in the assay medium, a complex is formed which inhibits interaction between the label modifying reagent and the label. By measuring the signal obtained in the presence of a known amount of ligand in the assay medium and comparing that signal with the signal obtained with an unknown sample suspected of containing ligand, one can qualitatively or quantitatively determine the amount of ligand in the unknown. For determinating anti(ligand) the assay is carried out in substantially the same way, except a source of ligand or ligand analog must be provided.

REFERENCES:
patent: 3996345 (1976-12-01), Ullman et al.
patent: 3998943 (1976-12-01), Ullman
patent: 4036946 (1977-07-01), Kleinerman
Wei, et al., "Preparation of a Phospholipase C-Antihuman IgG Conjugate, and Inhibition of its Enzymatic Activity by Human IgG," Clin. Chem., vol. 23, No. 8, (1977) pp. 1386-1388. _

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