Enzymatic high range glucose test
First Claim
1. A test composition for the semiquantitative determination of high range glucose in an aqueous test sample, comprising;
- glucose oxidase, a peroxidatively active component, a chromogenic indicator system capable of providing a detectable colorimetric response and a borate buffer capable of providing an initial pH above about pH 7.
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Accused Products
Abstract
A test composition comprising glucose oxidase, a peroxidatively active component, a chromogenic indicator system capable of providing a detectable response and a borate buffer capable of providing an initial pH above about pH 7 is particularly useful for the semiquantitative determination of high range glucose, (i.e. glucose concentrations of 1,000 mg/dL to 10,000 mg/dL). A preferred indicator system is a water soluble iodide salt and poly(vinylpyrrolidone). The use of a borate buffer capable of providing an initial pH above about pH 7 permits greatly improved resolution for the semiquantitative determination of high range glucose when the test composition is incorported onto a carrier matrix to prepare a solid state unitary test device.
34 Citations
12 Claims
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1. A test composition for the semiquantitative determination of high range glucose in an aqueous test sample, comprising;
- glucose oxidase, a peroxidatively active component, a chromogenic indicator system capable of providing a detectable colorimetric response and a borate buffer capable of providing an initial pH above about pH 7.
- View Dependent Claims (2, 3, 4)
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5. A test device for the semiquantitative determination of high range glucose in an aqueous fluid sample comprising:
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(a) a carrier matrix, and (b) a test composition incorporated therewith, the test composition including glucose oxidase, a peroxidatively active component, a chromogenic indicator system capable of providing a detectable response and a borate buffer capable of providing an initial pH above about pH 7. - View Dependent Claims (6, 7, 8)
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9. A method of preparing the test device for the semiquantitative determination of high range glucose in an aqueous test sample, comprising the steps of:
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(a) incorporating with a carrier matrix with a test composition including glucose oxidase, a peroxidatively active component, a chromogenic indicator system capable of providing a detectable response and from about 0.2 M to about 0.8 M borate buffer capable of providing an initial pH above about 7; and (b) drying. - View Dependent Claims (10, 11, 12)
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Specification