Abstract: The colorimetric bio sensor includes: an upper housing including a blood cell separation module separating blood plasma from blood injected from the outside and spreads the separated blood plasma and a specimen delivery hole being located on the lower end of the blood cell separation module and formed to penetrate the upper housing, so that the lower end of the blood cell separation module is exposed to the outside; and a lower housing including a membrane containing a colorimetric reaction substance causing a colorimetric reaction with a target substance in the blood plasma by being in contact with the blood cell separation module through the specimen delivery hole, and a protrusion being located on the lower end of the membrane and protruding to a height corresponding to the depth of the specimen delivery hole.

Abstract: The present invention relates to a diagnostic cartridge, which may comprise: a housing that has formed therein a receiving space, and has formed, on the upper surface thereof, a first inlet and a second inlet that are spaced apart from each other in communication with the receiving space and an outer space; and a solution supply device that is integrally or detachably mounted in the second inlet, receives a washing solution and a reaction solution, and sequentially introduces at intervals the washing solution and the reaction solution into a membrane pad through the second inlet.

Abstract: A detection method according to the present embodiment comprises the steps of (a) photographing a first reference color area indicated by a first reference color, a second reference color area indicated by a second reference color, and a detection region reacting with a target so as to change color, (b) converting a photography result into a single element, (c) extracting a single element gradation value from the converted photography result, (d) converting the extracted single element gradation value into a standard gradation value, and (e) detecting the concentration of the target from the standard gradation value.

Abstract: A diagnostic strip for reacting with a target for diagnosis, including: a connector configured to be connected to a power providing unit and provide a driving power to the diagnostic strip; an entry path configured to transfer a body fluid including the target; a reaction unit configured to react with the target and whose electrical characteristic is changed by the reaction; and a display unit configured to receive the driving power and whose display state is changed according to the changed electrical characteristic of the reaction unit.