Method for determining analyte concentration by cross-reactivity

Chemistry: molecular biology and microbiology – Measuring or testing process involving enzymes or... – Involving antigen-antibody binding – specific binding protein...

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435 792, 435 793, 436501, 436512, 436815, 436816, 436817, 436901, C12Q 100, G01N 3353, G01N 33566, G01N 33563

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053386590

ABSTRACT:
The precision of identification of analyte composition in a sample, where the possible analytes cross-react with specific binding reagents, is enhanced by applying pattern recognition techniques. Samples to be tested are reacted with a panel of specific binding reagents reactive with the set of analytes to be tested to obtain a pattern of reactivity with respect to each analyte at a given concentration. This results in a databank of "CRIM profiles" for known concentrations of each analyte. This databank is stored in a computationally accessible form, which then can be matched against CRIM patterns obtained by testing unknown samples. In one embodiment, each CRIM pattern obtained is plotted as a single point in n-dimensional space, wherein n represents the number of specific binding reagents in the panel. Because a different CRIM profile as a function of concentration is obtained with each analyte, a pattern of points in n-dimensional space can be constructed for various concentrations of each individual member. Mathematical techniques can be used to project the pattern from n-dimensional space to reduce dimensionality. The location of a point yielded by a sample of unknown concentration can then be matched against those for predetermined known compositions to determine best estimate.

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Clark W., The Experimental Foundations of Modern Immunology (1980), John Wiley and Sons, New York, pp. 81-92.
Van Emon et al., "Analytical Methods for Pesticides and Plant Growth Regulators: Advanced Analytical Techniques," Sherma, J. ed., Academic Press, New York, (1989) pp. 217-263.
Vanderlaan et al., Environ. Sci. Technol. (1988) 22(3):247-254.
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