Abstract: A bilirubin assay system comprises a test card with a bilirubin test strip upon which a blood sample has been deposited, the bilirubin test strip comprising plasma from the blood sample. The bilirubin assay system further includes a mobile device with a camera, configured to capture an image of the test card that comprises the plasma on the bilirubin test strip and the set of calibration images. The system determines first and second calibration images, the first and the second calibration images having saturation values closest to a saturation value of the plasma on the bilirubin test strip. The system further determines a bilirubin level of the plasma on the bilirubin test strip based at least in part on interpolating a first color distance between the first calibration image and the plasma and a second color distance between the second calibration image and the plasma.

Abstract: A sample of blood is placed on a bilirubin test strip and plasma separated from the red blood cells. The bilirubin test strip is located on a test card along with a set of calibration images, the colors of the calibration images being associated with known plasma bilirubin levels. A photograph is taken of the test card. The bilirubin level of the blood sample is determined by, within the photograph, interpolating the color of the plasma and the colors of the closest colored calibration images.

Abstract: A sample of blood is placed on a bilirubin test strip and plasma separated from the red blood cells. The bilirubin test strip is located on a test card along with a set of calibration images, the colors of the calibration images being associated with known plasma bilirubin levels. A photograph is taken of the test card. The bilirubin level of the blood sample is determined by, within the photograph, interpolating the color of the plasma and the colors of the closest colored calibration images.