Is the sub-health testing instrument reliable?

Sub-health refers to a state in which the human body is between health and disease. People in sub-health state can't reach the health standard, which is characterized by the decline of vitality, function and adaptability in a certain period of time, but it doesn't meet the clinical or subclinical diagnostic criteria of modern medicine. Sub-health state can only be diagnosed clearly through medical history and scale evaluation, so sub-health detector is not credible.

The sub-health detector is not credible, and the sub-health state is mainly physical and mental fatigue syndrome, which is a state between health and disease. Generally, it is caused by deficiency of both heart and spleen, such as fatigue, depression and loss of appetite. Does not meet the clinical or subclinical diagnostic criteria of modern medicine, and can only be diagnosed clearly through medical history, symptoms, inner feelings and scale evaluation. The indicators measured by instruments alone are not credible.