Abstract: Provided herein are color charts and water color pigment solutions useful, for example, in the calibration of reflectance-based diagnostic analyzers.

Abstract: Provided herein are color charts and water color pigment solutions useful, for example, in the calibration of reflectance-based diagnostic analyzers.

Abstract: Provided herein are color charts and water color pigment solutions useful, for example, in the calibration of reflectance-based diagnostic analyzers.

Abstract: Provided herein are color charts and water color pigment solutions useful, for example, in the calibration of reflectance-based diagnostic analyzers.

Abstract: The inventive concepts disclosed herein are generally directed to the use of a hand-held mobile computing device, such a smartphone or tablet, to interpret the results of a medical assay device. By controlling conditions like image placement and illumination and correcting for imperfect illumination, accurate results can be obtained with hand-held mobile computing device.

Abstract: Methods and systems are disclosed including a reagent analyzer, comprising a test analyzing mechanism, such as an optical imaging system, configured to read a first sample of a specimen combined with a reagent configured to react with the sample in a presence of an analyte of interest and a second sample of the specimen that is not combined with a reagent, and to output one or more first signals indicative of the test analyzing mechanism reading the first and second samples; and a processor receiving the one or more first signals and executing logic to analyze the second sample responsive to the processor determining that the analyte of interest is present in the first sample. The processor may execute logic to analyze the second specimen utilizing one or more ratio algorithm and comparing the results of the algorithm against predetermined values indicative of expected color.

Abstract: The inventive concepts disclosed herein are generally directed to the use of a hand-held mobile computing device, such a smartphone or tablet, to interpret the results of a medical assay device. By controlling conditions like image placement and illumination and correcting for imperfect illumination, accurate results can be obtained with hand-held mobile computing device.

Abstract: Methods and systems are disclosed including a reagent analyzer, comprising a test analyzing mechanism, such as an optical imaging system, configured to read a first sample of a specimen combined with a reagent configured to react with the sample in a presence of an analyte of interest and a second sample of the specimen that is not combined with a reagent, and to output one or more first signals indicative of the test analyzing mechanism reading the first and second samples; and a processor receiving the one or more first signals and executing logic to analyze the second sample responsive to the processor determining that the analyte of interest is present in the first sample. The processor may execute logic to analyze the second specimen utilizing one or more ratio algorithm and comparing the results of the algorithm against predetermined values indicative of expected color.

Abstract: Disclosed is an improvement in the analysis for an analyte in a urine test sample in which the urine is contacted with a labeled antibody specific to the analyte and the concentration of the analyte is determined by measuring the response from the label. The improvement involves maintaining the concentration of urea in the test sample above the threshold value which value is the concentration of urea at which increases in the urea concentration do not affect the accuracy of the assay such as by interfering with the binding between the analyte and the labeled antibody.

Abstract: Disclosed is an improved method for the detection of an analyte in a fluid test sample using a strip of a negatively charged matrix material having a zone containing mobile, labeled binding partner for the analyte and a separate zone for capturing the labeled binding partner as it is carried through this zone by the fluid test sample. The improvement involves combining the fluid test sample with a polyalkoxylated amine surfactant to control non-specific binding of the labeled binding partner to the negatively charged matrix material.