The Thundervolt's Frequency Freeze mode of operation does not use any of the three methods you mentioned to detect and set it's frequency. We use a different technique which has proven to be more accurate. The degree of accuracy in our tester is 1 x 10 to the -6, or .000001, or one millionth.
The amount of human life force increase after Thundervolt zapping can easily be verified with a series of Body Tester tests. One test is far too narrow a database to draw conclusions. But after a couple weeks of testing, a wonderful pattern emerges. The user can now numerically visualize their past history of body power, where they are presently, and some idea of possible future improvement. Such results would not be possible if the assaulted microbes were only temporarily stunned, as you suggest.
Most of my customers can't afford the cash or time for very expensive laboratory culture analysis. Specific microbial density testing in CFU's (colony forming units) may be the gold standard in a lab, but not affordable for most people.
But our Body Tester only costs $49.95. If someone uses it for two or three weeks and gets a rising set of numbers while feeling continuously better,
then our Body Tester will have done it's job. They will be satisfied, relieved and happy.