Field tests were performed on most of our detectors, even back to the Deep Search series. If you are interested in receiving a report on your Tesoro model, let us know, and we will check through our records. As a reminder, many of our models have the roman numeral II or the word Sabre in their model name, so please be as specific as possible when requesting a field test. Also, include your mailing address as these reports are not available in an electronic format. Thank you.