Nonaqueous polymeric reagent compositions and applications thereof
First Claim
1. A hydrophilic reagent composition for determining an analyte in a sample comprising:
- (a) a nonaqueous copolymer formed from a mixture comprising;
(i) a first monomer of the general formula ##STR7## where R1 is hydrogen or methyl, and R2 is a hydroxyalkyl group having from 1 to 5 carbon atoms,(ii) a second monomer of the general formula ##STR8## where R1 is hydrogen or methyl and R3 is a substituted or unsubstituted alkyl group having from 1 to 8 carbon atoms and wherein said second monomer is neutral in charge,(iii) an organic solvent, and(iv) an initiator in an amount sufficient for causing polymerization of the monomers;
(b) an enzyme in powder form homogeneously dispersed in said copolymer and reactive with said analyte; and
(c) an indicator in an amount sufficient to generate a detectable signal when in the presence of said analyte and said enzyme.
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Accused Products
Abstract
Non-aqueous, polymeric reagent film compositions for use with analytical test devices of the dry chemistry type are described. The film compositions are prepared from an organic solution of a copolymer formed by interaction of at least two monomers wherein
(a) the first monomer is a hydroxylated acrylate of the general formula ##STR1## where R1 is hydrogen or, more preferably, methyl, and R2 is a hydroxyalkyl group having from 1 to 5 carbon atoms, and
(b) the second monomer is a neutral acrylate of the general formula ##STR2## where R1 is hydrogen or, more preferably, methyl, and R3 is a substituted or unsubstituted alkyl group having from 1 to 8 carbon atoms.
Preferably, a third monomer is also included which is an amine-containing acrylate of the general formula ##STR3## where R1 is hydrogen or, more preferably, methyl, and R4 is a substituted or unsubstituted aminoalkyl or glycidyl group having from 1 to 5 carbon atoms or a surfactant polyethylene glycol group having from 10 to 30 carbon atoms. The film further comprises at least one enzyme in powder form dispersed therein and, optionally, a chromogenic indicator. The film composition is especially useful for determining components in body fluids, for example, for detecting glucose in whole blood, by rapid techniques.
25 Citations
42 Claims
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1. A hydrophilic reagent composition for determining an analyte in a sample comprising:
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(a) a nonaqueous copolymer formed from a mixture comprising; (i) a first monomer of the general formula ##STR7## where R1 is hydrogen or methyl, and R2 is a hydroxyalkyl group having from 1 to 5 carbon atoms, (ii) a second monomer of the general formula ##STR8## where R1 is hydrogen or methyl and R3 is a substituted or unsubstituted alkyl group having from 1 to 8 carbon atoms and wherein said second monomer is neutral in charge, (iii) an organic solvent, and (iv) an initiator in an amount sufficient for causing polymerization of the monomers; (b) an enzyme in powder form homogeneously dispersed in said copolymer and reactive with said analyte; and (c) an indicator in an amount sufficient to generate a detectable signal when in the presence of said analyte and said enzyme. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An apparatus for determining an analyte in a sample comprising a carrier which is inert with respect to said analyte and a hydrophilic reagent composition coated thereon, said reagent composition comprising:
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(a) a nonaqueous copolymer formed from a mixture comprising; (i) a first monomer of the formula ##STR10## where R1 is hydrogen and methyl, and R2 is a hydroxyalkyl group having from 1 to 5 carbon atoms, (ii) a second monomer of the formula ##STR11## where R1 is hydrogen or methyl and R3 is a substituted or unsubstituted alkyl group having from 1 to 8 carbon atoms and wherein said second monomer is neutral in charge, (iii) an organic solvent, and (iv) an initiator in an amount sufficient for causing polymerization of the monomers; (b) an enzyme in powder form homogeneously dispersed in said copolymer and reactive with said analyte; and (c) an indicator in an amount sufficient to generate a detectable signal when in the presence of said analyte and said enzyme. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A method for determining an analyte in a sample by contacting said sample with a hydrophilic reagent composition to form a reaction mixture and observing said reaction mixture for the appearance of a detectable signal, wherein said reagent composition comprises:
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(a) a nonaqueous copolymer formed from a mixture of; (i) a first monomer of the formula ##STR13## where R1 is hydrogen or methyl, and R2 is a hydroxyalkyl group having from 1 to 5 carbon atoms, (ii) a second monomer of the formula ##STR14## where R1 is hydrogen and methyl and R3 is a substituted or unsubstituted alkyl group having from 1 to 8 carbon atoms and wherein said second monomer is neutral in charge, (iii) an organic solvent, and (iv) an initiator in an amount sufficient for causing polymerization of the monomers; (b) an enzyme in powder form homogeneously dispersed in said copolymer and reactive with said analyte; and (c) an indicator in an amount sufficient to generate said detectable signal when in the presence of said analyte and said enzyme. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42)
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Specification