G - Physics – 01 – N
Patent
G - Physics
01
N
167/43
G01N 33/577 (2006.01) G01N 33/53 (2006.01) G01N 33/566 (2006.01) G01N 33/58 (2006.01) G01N 33/94 (2006.01)
Patent
CA 2026124
14 Abstract of the Disclosure A method for determining ligands in a sample is disclosed. The method involves mixing with the sample in which the ligand is to be determined a tracer having the formula of Fig. 1 of the attached drawings or a biologically acceptable salt of such a tracer, a monoclonal antibody, and glycerol added as a part of a solution of the monoclonal antibody in which the glycerol is present in an amount sufficient to increase the stability of the monoclonal antibody in the solution, and then determining the amount of tracer bound to the antibody by fluorescence polarization techniques as a measure of the amount of ligand in the sample. In Fig. 1 of the drawings R is a ligand or analog thereof having at least one common epitope with a ligand to be determined so that the ligand to be determined and the ligand or analog thereof of the tracer are both specifically recognizable by a given antibody, and N is an integer from one to ten. The monoclonal antibody used is one which is capable of specifically recognizing both the ligand to be determined and the tracer. Glycerol is used in the monoclonal antibody solution in an amount, usually from about 5 percent to about 20 percent, sufficient to increase the stability of the monoclonal antibody. The optimum glycerol concentration has been found to be about 10%.
Blonski David R.
Flentge Charles A.
Hawksworth David J.
Pennington Charles D.,(jr.)
Abbott Laboratories
Blonski David R.
Flentge Charles A.
Goudreau Gage Dubuc
Hawksworth David J.
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