Abstract: A method is provided for using a loop-back test device to verify continuity between loop-back probes electrically connected to each other on a probe card, the loop-back test device including a first conductive region electrically connected to a substrate, a second conductive region electrically isolated from the substrate, the second conductive region spaced apart from the first conductive region such that when a first loop-back probe contacts the first conductive region a second loop-back probe contacts the second conductive region, The method includes placing the first loop-back probe in electrical contact with the first conductive region, and placing the second loop-back probe in electrical contact with the second conductive region. Continuity between the substrate and the second conductive region is then measured.