DISPOSABLE TEST STRIP DEVICE FOR ANALYTE DETECTION IN A BODY LIQUID SAMPLE
First Claim
1. A disposable, enzymatic assay based test strip device for colorimetric detection of an analyte compound in a body liquid sample, comprising a base support and a substrate material disposed on said base support and defining a number of reactive test zones and a reactive control zone, said test strip device further provided with a compound buffer comprising at least one chemical compound being a member of the same family as the analyte compound and/or bearing a characteristic to said family functional group, wherein each reactive test zone is configured to develop a visual indication when the concentration of the analyte compound in the body liquid sample exceeds a predetermined limit and the reactive control zone is configured to develop a visual indication upon being supplied with the body liquid sample, wherein the substrate material defining each reactive zone is deposited with a biological ink composition comprising at least one enzyme and a chromogen;
- and wherein the compound buffer is disposed into the substrate material defining the reactive control zone or at least closely adjoining thereto such, that said compound buffer admixes with the biological ink composition contained in the reactive control zone when the substrate material, defining said reactive control zone or closely adjoining thereto, is supplied with the body liquid sample.
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Accused Products
Abstract
A disposable, enzymatic assay based test strip device for colorimetric detection of an analyte compound, such as ethanol, in a body liquid sample, such as saliva, is provided. The test strip device includes at least one reactive test zone configured to develop a visual indication when the concentration of the analyte compound in the body liquid sample exceeds a predetermined limit, and a reactive control zone configured to develop a visual indication upon being supplied with the body liquid sample. The test strip device further includes a compound buffer, preferably selected from non-volatile alcohols and disposed to closely adjoin the reactive control zone such, that the content of the compound buffer admixes with the reagents provided within the reactive control zone, while the control zone is being supplied with the body liquid sample. Deposition of the reactive zones is preferably implemented by conventional printing methods utilizing biological inks.
14 Citations
19 Claims
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1. A disposable, enzymatic assay based test strip device for colorimetric detection of an analyte compound in a body liquid sample, comprising a base support and a substrate material disposed on said base support and defining a number of reactive test zones and a reactive control zone, said test strip device further provided with a compound buffer comprising at least one chemical compound being a member of the same family as the analyte compound and/or bearing a characteristic to said family functional group, wherein each reactive test zone is configured to develop a visual indication when the concentration of the analyte compound in the body liquid sample exceeds a predetermined limit and the reactive control zone is configured to develop a visual indication upon being supplied with the body liquid sample, wherein the substrate material defining each reactive zone is deposited with a biological ink composition comprising at least one enzyme and a chromogen;
- and wherein the compound buffer is disposed into the substrate material defining the reactive control zone or at least closely adjoining thereto such, that said compound buffer admixes with the biological ink composition contained in the reactive control zone when the substrate material, defining said reactive control zone or closely adjoining thereto, is supplied with the body liquid sample.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
Specification