C14 breath test Helicobacter pylori detection of the normal value is 100dpm, less than 100dpm are negative, greater than 100dpm is positive, so the measurement value of 90dpm, and no obvious symptoms patients generally do not need to take drugs. Infection with Helicobacter pylori can cause upper abdominal pain, dyspepsia with flatulence, bad breath and drooling. If there are no symptoms and the measurement is within the normal range, there is no need to take medication, and a value of 90dpm does not require treatment. Helicobacter pylori 90dpm patients are recommended to go to the hospital for further systematic examination, standardized treatment under the guidance of the doctor.