I read about this technology in the Ph miracle by Robert Young. For the first time in my life, I've seen it work and display on the computer my blood and the blood of many people in our household.

It is a marketing tool used by a water ionizing machine salesmen.
I don't know anything about it other than what the salesman told us and what robert young says in his PH Miracle book.
What's your understanding of Live Blood Analysis?
Is it useful?
To what extent?