An array of pre-connected analyte sensors, the array comprising: a substrate (404, 3204, 4000); a first plurality of electrical contacts (408, 412, 4002) disposed on the substrate (404, 3204, 4000); a second plurality of electrical contacts (406, 410, 4001) disposed on the substrate (404, 3204, 4000); and a plurality of analyte sensors disposed on the substrate (404, 3204, 4000), wherein each sensor is mechanically and electrically attached to a surface of the substrate (404, 3204, 4000), wherein the analyte sensors each have an elongated conductive body with a proximal end and a free distal end configured to be implanted into a subject, and each of the plurality of analyte sensors comprising a first electrode, a second electrode, wherein the first electrode is positioned coaxially within the second electrode, a first sensor electrical contact at the proximal end of the sensor, the first sensor electrical contact being in electrical communication with the first electrode and coupled to a corresponding one of the first plurality of electrical contacts (408, 412, 4002) on the substrate (404, 3204, 4000) at the proximal end of the sensor, and a second sensor electrical contact at the proximal end of the sensor, the second sensor electrical contact being in electrical communication with the second electrode and coupled to a corresponding one of the second plurality of electrical contacts (406, 410, 4001) on the substrate (404, 3204, 4000) at the proximal end of the sensor, wherein the first and the second sensor electrical contact of each sensor are longitudinally aligned and spaced along a longitudinal axis of the sensor. a substrate (404, 3204, 4000); a first plurality of electrical contacts (408, 412, 4002) disposed on the substrate (404, 3204, 4000); a second plurality of electrical contacts (406, 410, 4001) disposed on the substrate (404, 3204, 4000); and a plurality of analyte sensors disposed on the substrate (404, 3204, 4000), wherein each sensor is mechanically and electrically attached to a surface of the substrate (404, 3204, 4000), wherein the analyte sensors each have an elongated conductive body with a proximal end and a free distal end configured to be implanted into a subject, and each of the plurality of analyte sensors comprising a first electrode, a second electrode, wherein the first electrode is positioned coaxially within the second electrode, a first sensor electrical contact at the proximal end of the sensor, the first sensor electrical contact being in electrical communication with the first electrode and coupled to a corresponding one of the first plurality of electrical contacts (408, 412, 4002) on the substrate (404, 3204, 4000) at the proximal end of the sensor, and a second sensor electrical contact at the proximal end of the sensor, the second sensor electrical contact being in electrical communication with the second electrode and coupled to a corresponding one of the second plurality of electrical contacts (406, 410, 4001) on the substrate (404, 3204, 4000) at the proximal end of the sensor, wherein the first and the second sensor electrical contact of each sensor are longitudinally aligned and spaced along a longitudinal axis of the sensor. a plurality of analyte sensors disposed on the substrate (404, 3204, 4000), wherein each sensor is mechanically and electrically attached to a surface of the substrate (404, 3204, 4000), wherein the analyte sensors each have an elongated conductive body with a proximal end and a free distal end configured to be implanted into a subject, and each of the plurality of analyte sensors comprising a first electrode, a second electrode, wherein the first electrode is positioned coaxially within the second electrode, a first sensor electrical contact at the proximal end of the sensor, the first sensor electrical contact being in electrical communication with the first electrode and coupled to a corresponding one of the first plurality of electrical contacts (408, 412, 4002) on the substrate (404, 3204, 4000) at the proximal end of the sensor, and a second sensor electrical contact at the proximal end of the sensor, the second sensor electrical contact being in electrical communication with the second electrode and coupled to a corresponding one of the second plurality of electrical contacts (406, 410, 4001) on the substrate (404, 3204, 4000) at the proximal end of the sensor, a first electrode, a second electrode, wherein the first electrode is positioned coaxially within the second electrode, a first sensor electrical contact at the proximal end of the sensor, the first sensor electrical contact being in electrical communication with the first electrode and coupled to a corresponding one of the first plurality of electrical contacts (408, 412, 4002) on the substrate (404, 3204, 4000) at the proximal end of the sensor, and a second sensor electrical contact at the proximal end of the sensor, the second sensor electrical contact being in electrical communication with the second electrode and coupled to a corresponding one of the second plurality of electrical contacts (406, 410, 4001) on the substrate (404, 3204, 4000) at the proximal end of the sensor, wherein the first and the second sensor electrical contact of each sensor are longitudinally aligned and spaced along a longitudinal axis of the sensor.