PH value is also known as pH, in terms of the human body, it is necessary to test various body fluids, most commonly the pH of blood, urine, gastric juice, cerebrospinal fluid, pleural fluid and peritoneal fluid, etc. In the hospital, these body fluids are collected and sent directly to the laboratory, where they are tested manually or by machine by a specialized laboratory technician. If you need to test yourself at home, it is relatively simple to buy PH test strips directly to measure yourself, and you can buy a ph testing machine, you can also test.