Test strips having reaction zones and channels defined by a thermally transferred hydrophobic barrier
First Claim
1. A test strip for determining a concentration of at least one analyte in a physiological sample, said test strip comprising:
- a porous matrix;
a plurality of reaction zones, wherein each of said reaction zones is defined in the porous matrix by a hydrophobic barrier deposited using thermal transfer technology;
at least one fluid channel for delivering the physiological sample to at least one of the plurality of reaction zones, the at least one fluid channel defined by the hydrophobic barrier; and
a reagent composition present in each of said reaction zones.
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Accused Products
Abstract
Test strips, and methods for their manufacture and use in the determination of the concentration of at least one analyte in a physiological sample are provided. The subject test strips have a plurality of reaction zones defined by a hydrophobic barrier. The reagent compositions present in each reaction zone may be the same or different. In addition, each reaction zone may have a separate fluid channel, or two or more of the reaction zones may have separate channels that merge into a single channel. In use, sample is applied to a subject test strip, a signal is detected and then related to the amount of analyte in the sample. Also provided are methods for manufacturing the subject test strips using thermal transfer technology to apply the hydrophobic barrier. Finally, kits are provided for use in practicing the subject methods.
222 Citations
14 Claims
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1. A test strip for determining a concentration of at least one analyte in a physiological sample, said test strip comprising:
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a porous matrix;
a plurality of reaction zones, wherein each of said reaction zones is defined in the porous matrix by a hydrophobic barrier deposited using thermal transfer technology;
at least one fluid channel for delivering the physiological sample to at least one of the plurality of reaction zones, the at least one fluid channel defined by the hydrophobic barrier; and
a reagent composition present in each of said reaction zones. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification