Research Associate Laboratory in Texas (https://www.vetdna.com) has developed diagnostic tests for some of the more common parasitic mites.
However a person could still have a problem with a less common species for which there is not yet a test.
As for a treatment: researchers are developing a poultry vaccine that would boost the ability of the bird’s immune system to combat parasitic mites.
It would be possible to develop a similar vaccine for humans.
Because mites hide in the environment as well as attacking a human or other animal, treating both at the same time is key.