 We have designed self-powered paper-based diagnostic tools. The top layer contains 4 electrochemical tests, the areas and 10 colorimetric test zones. On the bottom there is a triboelectric generator that the user can tap to generate a peak voltage that is transferred into this chip. These devices can be considered as portable laboratories that a doctor can use in remote locations in order to assess or diagnose malnutrition problems, kidney or liver diseases and even the quality of drinkable water. We developed a machine vision algorithm that allows the user to take a picture of the device after doing a test and get immediate results of the diagnostics just by identifying the colors on the device. Paper is a very good substrate to make low-cost diagnostic devices. It is inexpensive, it is very easy to manufacture and it is readily disposed by Borne.