Blood test can detect Helicobacter pylori, but it can not detect whether there is Helicobacter pylori infection now, it can only show that it has been infected in the past, and it can not distinguish whether there is the bacteria now, as well as its specific value and severity.
Blood test is the routine blood test commonly used in clinical practice, which can mainly detect the values of various antibodies in the blood, the function of the liver, the function of the thyroid gland, etc., and if there is a positive H. pylori lgG antibody in the serum, it indicates that it has been infected with H. pylori.
The most common and accurate clinical method is the carbon 13/14 breath test, because H. pylori grows and reproduces mainly in the stomach, and the exhaled gas can detect whether one is currently infected, as well as the severity and specific value of the infection.
If H. pylori infection is detected, it is recommended to seek prompt medical attention to identify the cause of the disease with the help of a doctor and to carry out targeted treatment or therapy.