Compositions and methods for monitoring oxalate
First Claim
1. A test device for detecting oxalate in a liquid sample of a subject, the device comprising oxalate decarboxylase, and an indicator system that provides a detectable reaction product in response to formate production, wherein the device detects oxalate in the liquid sample within 10 minutes of obtaining the liquid sample from the subject.
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Accused Products
Abstract
The present invention features compositions and methods for the detection or measurement of oxalate in a sample. Such compositions include test devices that provide for the rapid and accurate detection of oxalate in a sample from a biological fluid. Advantageously, the compositions can be used to monitor the oxalate levels of a patient at a point of care (e.g., at the patient'"'"'s home, clinic, physician'"'"'s office, or other clinical setting).
5 Citations
24 Claims
- 1. A test device for detecting oxalate in a liquid sample of a subject, the device comprising oxalate decarboxylase, and an indicator system that provides a detectable reaction product in response to formate production, wherein the device detects oxalate in the liquid sample within 10 minutes of obtaining the liquid sample from the subject.
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7. A test device for detecting oxalate in a liquid sample of a subject, the device comprising a liquid permeable material defining the following portions in capillary communication:
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a) a site for application of a liquid sample, comprising a liquid permeable medium; b) a second portion comprising a liquid permeable medium; and c) a third portion that is the site for detecting the presence of oxalate at the test site, the third portion comprising a liquid permeable medium having an enzyme system having oxalate specific enzyme activity fixed to the medium at the test site, the enzyme system comprising oxalate specific enzyme, a substance which reacts with a reaction product of the oxalate specific enzyme, and an indicator material which reacts in the presence of the reaction product and changes color, wherein the device detects oxalate in the liquid sample within 10 minutes of obtaining the liquid sample from the subject. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification