Abstract: Methods, apparatus, systems, and articles of manufacture to make and/or process a diagnostic test device are disclosed. An example apparatus includes a sensor to measure a current between a first electrode and a second electrode of a bioelectrochemical cell coupled to a test zone corresponding to a target analyte on a porous media of a device; a processor to compare the current to a threshold; and when the current is more than the threshold, identify that the target analyte is present in a sample; and an antenna to wirelessly transmit results.