The reference value for the urea C14 test is usually 100 (dpm/mmol CO₂) or less. The urea C14 test is now a common method of screening for H. pylori and is generally referred to as a blow test. If the person being examined has H. pylori infection, his or her exhaled gas will contain CO₂ labeled by the isotope, and a test result greater than 100 (dpm/mmol CO₂) will require regular medication. If the urea C14 test result is higher than its reference range, you can follow the doctor’s instructions to take three or four drugs for eradication treatment, which can effectively reduce the patient’s discomfort, and will greatly reduce the chances of relapse in the later stage. Patients with a positive urea C14 test are advised to seek medical attention as soon as possible and follow the doctor’s instructions for active treatment. Drugs need to be used under the guidance of a professional physician, not on their own discretionary use of drugs.