Helicobacter pylori detection: an overview of methods and significance

Helicobacter pylori (Hp) testing is an important means of diagnosing the presence of this bacterial infection in the stomach, which is closely related to gastritis, gastric ulcer and even gastric cancer. Detection methods are divided intoInvasive(such as gastroscopy biopsy) andnon-invasive(Such as urea breath test, fecal antigen test, etc.) There are two major categories, each with its own advantages and disadvantages. The content will introduce the detection principles, applicable groups, comparison of common methods and precautions in order to help readers make scientific choices.

Core methods for Helicobacter pylori detection

In non-invasive testing,Urea breath test(C13/C14) is the most commonly used to detect infection by detecting exhaled breath after taking labeled urea, with an accuracy of more than 95%;Stool Antigen TestSuitable for children or those who resist gastroscopy, but attention should be paid to sample timeliness. Invasive methods such asgastroscopy biopsyGastric mucosal lesions can be observed simultaneously, but the operation is complex and costly. In addition, serum antibody testing has been gradually replaced because it cannot distinguish current symptoms from past infections.

Applicable groups and test selection recommendations

People with long-term abdominal pain, acid reflux or family history of gastric cancer should be tested first; urea breath test is recommended for review after treatment. Children and pregnant women need to avoid radioactive C14 and may choose C13 or stool testing. Antibiotics and acid-suppressing drugs need to be stopped for 2-4 weeks before testing, otherwise false negatives may occur. See the table below for a comparison of different methods:

Detection significance and subsequent processing

Positive results need to be combined with symptoms to decide whether to eradicate treatment. Quadruple therapy (two antibiotics + acid suppressor + bismuth) is commonly used. A review is required 1-2 months after eradication to avoid recurrence. If symptoms persist for those who are negative, further examination is recommended. For daily prevention, attention should be paid to dividing meals and disinfecting tableware to reduce irritation from high-salt diet.

Summary and Health Tips

The detection of Helicobacter pylori is a key step in the prevention and treatment of gastric diseases. Choosing the appropriate method can improve the diagnostic efficiency. Non-invasive testing is suitable for initial screening, while gastroscopy is used for complex cases. Regardless of the result, clinical judgment must be used to avoid over-treatment. A healthy lifestyle is just as important as regular screenings.

Quote sources:
1. World Gastroenterology Organization (WGO) "Guidelines for the Management of Helicobacter pylori Infection"
2. "Consensus on the Diagnosis and Treatment of Helicobacter pylori Infection in China" by the Gastroenterology Branch of the Chinese Medical Association
3. Common testing products:Shenzhen CNNC Haideway(C13/C14 breath test card),Aikang Biotechnology(fecal antigen detection reagent)