The normal value for a C14 breath test is usually negative, and a negative result is also known as a carbon 14 breath test value of less than 100.
The C14 breath test is primarily used to detect H. pylori, and a test value of less than 100 indicates that there is no H. pylori infection and is normal. A test value greater than 100 indicates infection with H. pylori. The results are different depending on the region and hospital where the kits and instruments are used, and the reference values are different.
H. pylori infection can lead to gastritis, gastric ulcers, duodenal ulcers, etc., and in severe cases, gastric cancer, and studies have shown a relationship between H. pylori infection and cancer incidence. Therefore, it is recommended that patients with a combination of stomach discomfort, such as stomach pain, stomach distension, stomach bleeding and other symptoms, should also promptly improve gastroscopy to determine whether ulcers, polyps and tumors occur. If so, anti-H. pylori treatment and anti-disease therapy should be administered promptly.