Analyzing the device in order to measure the non hemolysis level of the potential blood in the urine

摘要

PROBLEM TO BE SOLVED: To detect the presence of a small amount of non-hemolysis by comparing a difference of reflectivity signals with a predetermined threshold value. ;SOLUTION: Reflecting lights of four illuminated parts 63-66 of a reagent pad 30 are read and stored by four reflectivity detectors of a detector array. Each of the four read values is compared with a threshold value T3, e.g. a reflectivity of 29.1%, a threshold value T1, e.g. a reflectivity of 10.3%, and a threshold value T2, e.g. a reflectivity of 19.7%. Whether each value is larger or smaller than the threshold values is detected. Moreover, if every of the four read values does not reach the T3, it is detected whether at least three of the four read values are larger than a threshold value T4, e.g. a reflectivity of 56.0%. Finally, a difference of maximum and minimum values of the read values is measured. If the difference is larger than a predetermined value K, e.g. a reflectivity of 2.5%, it is assumed that non-hemolysis is present and a urine sample is classified to include a considerably minute amount of non- hemolysis.;COPYRIGHT: (C)1998,JPO