Assay for analysis of whole blood
First Claim
1. A method for the determination of an analyte other than hemoglobin in whole blood comprising the steps of:
- (A) physically contacting a sample of whole blood containing an analyte other than hemoglobin and a multizone element, said element consisting essentially of support having thereon, in order and in fluid contact, a registration zone and a reagent/spreading zone,provided said element does not contain a radiation-blocking zone,said reagent/spreading zone having a void volume and average pore size effective to accommodate whole blood, an containing an interactive composition capable of providing, upon interaction with said analyte, a dye which can be spectrophotometrically detected at a wavelength greater than about 600 nm; and
(B) detecting said dye at a wavelength greater than about 600 nm.
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Accused Products
Abstract
Disclosed herein is an assay useful for the determination of an analyte in whole blood. In particular, this assay is useful for the quantitative determination of peroxide-generating analytes, such as glucose or cholesterol, in whole blood. This assay utilizes a multizone element consisting essentially of a support having thereon, in order and in fluid contact, a registration zone and a reagent/spreading zone. The reagent/spreading zone has a void volume and average pore size effective to accommodate whole blood, and contains an interactive composition necessary for the analysis. Such composition is capable of providing, upon interaction with the analyte, a dye which can be spectrophotometrically detected at a wavelength greater than about 600 nm.
122 Citations
30 Claims
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1. A method for the determination of an analyte other than hemoglobin in whole blood comprising the steps of:
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(A) physically contacting a sample of whole blood containing an analyte other than hemoglobin and a multizone element, said element consisting essentially of support having thereon, in order and in fluid contact, a registration zone and a reagent/spreading zone, provided said element does not contain a radiation-blocking zone, said reagent/spreading zone having a void volume and average pore size effective to accommodate whole blood, an containing an interactive composition capable of providing, upon interaction with said analyte, a dye which can be spectrophotometrically detected at a wavelength greater than about 600 nm; and (B) detecting said dye at a wavelength greater than about 600 nm. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for the determination of an analyte other than hemoglobin in whole blood comprising the steps of:
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(A) physically contacting a sample of whole blood containing an analyte other than hemoglobin and a multizone element, said element consisting of a support having thereon, in order and in fluid contact, a registration zone, a subbing zone and a reagent/spreading zone, said reagent/spreading zone having a void volume and average pore size effective to accommodate whole blood, and containing an interactive composition capable of providing, upon interaction with said analyte, a dye which can be spectrophotometrically detected at a wavelength greater than about 600 nm; and (B) quantitatively detecting said dye at a wavelength greater than about 600 nm.
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9. A method for the determination of an analyte other than hemoglobin in whole blood comprising the steps of:
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(A) physically contacting a sample of whole blood containing an analyte other than hemoglobin and a multizone element, said element consisting essentially of a support having thereon, in order and in fluid contact, a registration zone and a reagent/spreading zone, provided said element does not contain a radiation-blocking zone, said reagent/spreading zone containing an interactive composition capable of providing, upon interaction with said analyte, a dye which can be spectrophotometrically detected at a wavelength greater than about 600 nm, said reagent/spreading zone also comprising a particulate structure having a void volume of from about 40 to about 60 percent and an average pore size of at least 5 microns, said particulate structure comprising; (i) a plurality of heat-stable, organopolymeric particles non-swellable in and impermeable to whole blood, said particles having a particle size of from about 1 to about 200 microns, and (ii) an adhesive, in an amount less than about 10 percent by weight of said particles, comprising an organic polymer different from that of said particles and insoluble in whole blood; substantially all of said adhesive being concentrated on surface areas of adjacent particles where said adjacent particles are in closest proximity, and bonding said particles together with said adhesive into a coherent, three-dimensional lattice which is non-swellable in whole blood; and (B) quantitatively detecting said dye at a wavelength greater than about 600 nm. - View Dependent Claims (10, 11)
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12. A method for the determination of glucose in whole blood comprising the steps of:
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(A) physically contacting a sample of whole blood containing glucose and a multilayer element, said element consisting essentially of support having thereon, in order and in fluid contact, a registration layer and a reagent/spreading layer, provided said element does not contain a radiation-blocking layer, said reagent/spreading layer having a void volume and average pore size effective to accommodate whole blood, and containing a composition comprising glucose oxidase, a substance having peroxidative activity, an amino-antipyrine and a color-forming coupler which, upon the interaction of said composition with glucose, provides a dye which can be spectrophotometrically detected at a wavelength greater than about 600 nm; and (B) quantitatively detecting said dye at a wavelength greater than about 600 nm. - View Dependent Claims (13, 14, 15)
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16. A multizone element for the determination of an analyte other than hemoglobin in whole blood consisting essentially of a support having thereon, in order and in fluid contact, a registration zone and a reagent/spreading zone,
provided said element does not contain a radiation-blocking zone, said reagent/spreading zone having a void volume and average pore size effective to accommodate whole blood containing an anlyte other than hemoglobin and containing an interactive composition for said analyte, said interactive composition comprising a substance having peroxidative activity, and capable of providing, upon interaction with said analyte, a dye which can be spectrophotometrically detected at a wavelength greater than about 600 nm.
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21. A multizone element for the determination of an analyte other than hemoglobin in whole blood consisting essentially of a support having thereon, in order and in fluid contact, a registration zone and a reagent/spreading zone,
provided said element does not container a radiation-blocking zone, said reagent/spreading zone comprising a particulate structure having a void volume and average pore size effective to accommodate whole blood containing an analyte other than hemoglobin, said particulate structure comprising a plurality of particles non-swellable in and impermeable to whole blood, said particles having a particle size of from about 1 to about 200 microns and being bonded together on surface areas of adjacent particles where said adjacent particles are in closest proximity to form a coherent, three-dimensional lattice which is non-swellable in whole blood, said reagent/spreading zone containing an interactive composition necessary for said determination, said interactive composition comprising a substance having peroxidative activity, and capable of providing, upon interaction with said analyte, a dye which can be spectrophotometrically detected at a wavelength greater than about 600 nm.
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24. A multizone element for the determination of an analyte other than hemoglobin in whole blood consisting essentially of a support having thereon, in order and in fluid contact, a registration zone and a reagent/spreading zone,
provided said element does not contain a radiation-blocking zone, said reagent/spreading zone also comprising a particulate structure having a void volume of from about 40 to about 60 percent and an average pore size of at least from about 15 to about 65 microns, said particulate structure comprising: -
(i) a plurality of heat-stable, organopolymeric particles non-swellable in and impermeable to whole blood containing an analyte other than hemoglobin, said particles having a particle size of from about 1 to about 200 microns, and (ii) an adhesive, in an amount less than about 10 percent by weight of said particles, comprising an organic polymer different from that of said particles and insoluble in whole blood; substantially all of said adhesive being concentrated on surface areas of adjacent particles where said adjacent particles are in closest proximity, and bonding said particles together with said adhesive into a coherent, three-dimensional lattice which is non-swellable in whole blood, said reagent/spreading zone containing an interactive composition comprising a substance having peroxidative activity, and capable of providing, upon interaction with said analyte, a dye which can be spectrophotometrically detected at a wavelength greater than about 600 nm. - View Dependent Claims (25)
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26. A multilayer element for the determination of glucose in whole blood consisting essentially of a support having thereon, in order and in fluid contact, a registration layer and a reagent/spreading layer,
provided said element does not contain a radiation-blocking layer, said spreading/reagent layer having a void volume and average pore size effective to accommodate whole blood containing glucose, and containing an interactive composition comprising glucose oxidase, a substance having peroxidative activity, an aminoantipyrine and a color-forming coupler which, upon the interaction of said composition with glucose, provides a dye which can be spectrophotometrically detected at a wavelength greater than about 600 nm.
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30. A multizone element for the determination of an analyte other than hemoglobin in whole blood consisting of a support having thereon, in order and in fluid contact, a registration zone, a subbing zone and a reagent/spreading zone,
said reagent/spreading zone having a void volume and average pore size effective to accommodate whole blood containing an analyte other than hemoglobin, and containing an interactive composition for said analyte, said interactive composition comprising a substance having peroxidative activity, and capable of providing, upon interaction with said analyte, a dye which can be spectro-photometrically detected at a wavelength greater than about 600 nm.
Specification