What is the normal value of C14 breath test

The normal value for C14 breath test is 0-100 dpm/mmol. This test is mainly used for the diagnosis of helicobacter pylori infection, and a value exceeding 100 dpm/mmol usually indicates a positive result. The C14 breath test determines the status of Helicobacter pylori infection by detecting the labeled carbon dioxide content in the exhaled gas of the subject. Before the examination, it is necessary to fast for 4-6 hours, take urea capsules containing carbon-14 labeling, and wait for 15-30 minutes for breath sampling. A value in the range of 0-50dpm/mmol can be considered a negative result, indicating that there is currently no active infection. 50-100 dpm/mmol is within the critical range and may be related to mild inflammation of the stomach or recent use of antibiotics. It is recommended to have a follow-up examination 1-2 months later. Exceeding 100 dpm/mmol clearly indicates Helicobacter pylori infection, which can cause chronic gastritis, gastric ulcers, and even gastric cancer. Further evaluation of mucosal damage should be conducted in conjunction with gastroscopy examination. The test results may be affected by drugs such as proton pump inhibitors and bismuth agents, and the relevant drugs should be discontinued for 2 weeks before testing. Pregnant and lactating women should avoid this examination, and children should use specialized reagents and reduce the dosage. After being diagnosed with Helicobacter pylori infection, standardized quadruple therapy should be used for 14 days, including proton pump inhibitors, bismuth agents, and two antibiotics. After 4 weeks of treatment, a follow-up C14 breath test is required to confirm the eradication effect. Pay attention to the serving of individual dishes in daily life to avoid cross infection, reduce the intake of spicy and stimulating food, and conduct regular stomach health examination. If you experience digestive symptoms such as upper abdominal pain and bloating, you should seek medical attention promptly to investigate the cause.