| abstract |
Procedure that includes: illuminating a test strip wetted with a sample with selected spectra of light, the test strip having test pads configured to change color in the presence of an analyte in the sample; acquiring at least one digital image of the test strip; and Analyzing the color intensity from the at least one digital image against calibration curves to determine an analyte concentration in the sample correcting for one or more influencing substances in the sample that affect the color intensity, the method further comprising : acquiring at least one digital image of calibration pads, the calibration pads having color reference locations that form a series gamut of black, white, red, green, and blue colors of known chromaticity; Analyzing a color of the color reference points from the at least one digital image of the calibration pads by i) splitting the at least one digital image of the calibration pads into its component red, green and blue (RGB) channels and ii) measuring an intensity of each of the RGB channels; obtaining plots of the intensity of each of the RGB channels versus the known chromaticity of the color reference points; and Saving the graphs. |