Performance measures are quantitative metrics by which to judge the success of the project. They are the target of performance that you aim to achieve once you have completed your aims (not what has already been accomplished). Performance measures are technology-specific. Investigators may choose the metrics that would convince an end user that the technology is functional and offers advantages over currently available methods. It could be a measure of sensitivity, specificity, how rapid the assay is, a price point, or any other quantifiable target of performance. There should be performance measures for every aim, and there may be intermediate metrics if appropriate.