Views: 135008 Author: Bioteke Corporation Publish Time: 2024-11-14 Origin: Bioteke
Helicobacter pylori (H. pylori) is a Gram-negative, spiral-shaped, microaerophilic bacterium that mainly infects the human gastric mucosa and is one of the main causes of a variety of gastric diseases.
Helicobacter pylori is mainly transmitted through oral-oral, fecal-oral and shared tableware. Poor food hygiene, crowded places and shared tableware among family members are all factors that increase the risk of infection.
Although some infected people may have no obvious symptoms, H. pylori infection is often associated with the following symptoms and illnesses:
1. Gastritis: Long-term infection can lead to chronic gastritis, causing symptoms such as stomach discomfort, bloating, and nausea.
2. Gastric ulcer and duodenal ulcer: The risk of ulcers in infected people is significantly increased, and symptoms such as stomach pain and burning sensation may occur.
3. Gastric cancer: Helicobacter pylori is classified as a Class I carcinogen by the World Health Organization (WHO). Long-term infection may increase the risk of gastric cancer.
4. Gastric mucosa-associated lymphoid tissue lymphoma (MALT lymphoma): Helicobacter pylori infection may also cause this rare cancer of the stomach.
It is mainly divided into two categories: Invasive testing (requiring gastroscopy) and Non-invasive testing (not requiring gastroscopy).
1. Non-invasive detection methods
①. Urea breath test (UBT)
Principle: Helicobacter pylori can secrete a large amount of urease. After the patient takes a urea solution labeled with carbon isotopes (13C or 14C), Helicobacter pylori decomposes urea to produce carbon dioxide. The isotope change of carbon dioxide is detected by exhalation to determine whether the infection is present.
②. Fecal antigen detection
Principle: Detect whether there is Helicobacter pylori antigen in the patient's feces, usually using immunochromatography or enzyme-linked immunosorbent assay (ELISA).
③. Serological test (antibody test)
Principle: Determine the infection status by detecting Helicobacter pylori antibodies (IgG, IgA) in serum.
④. Saliva and urine antibody test
Principle: Detect Helicobacter pylori antibodies in saliva or urine to determine whether there is infection.
2. Invasive detection methods
①. Gastroscopy biopsy
Principle: Gastroscopy is used to collect gastric mucosal samples for testing, which is the "gold standard" for diagnosing Helicobacter pylori infection.
②. Molecular biology detection (PCR)
Principle: Detect Helicobacter pylori DNA in gastric mucosal samples through polymerase chain reaction (PCR).
Method | Advantages | Disadvantages |
UBT | Non-invasive, highly sensitive and specific | Inconvenient sample handling, false negative results |
Antibody testing | Simple and suitable for large-scale screening | Cannot distinguish between current and past infection |
Saliva or urine antibody test | Non-invasive and suitable for all groups of people | Low sensitivity and specificity |
Endoscopic biopsy | The “gold standard” for diagnosis and drug sensitivity testing | Invasive procedure, high cost |
PCR molecular testing | High sensitivity, capable of detecting drug resistance genes | Sample collection requires gastroscopy and is expensive |
Stool antigen test | Non-invasive and suitable for all groups of people | Inconvenient sample handling, false negative results |
Bioteke Helicobacter pylori Antigen Rapid Test Kit is an in vitro qualitative diagnostic product for rapid detection of Helicobacter pylori antigen in human fecal samples.
It uses immunochromatography, which is simple to operate, fast and accurate, and is currently one of the common methods widely used to screen Helicobacter pylori infection.
1. Rapid detection: Get test results within 15 minutes. No need to wait.
2. High sensitivity and specificity: Test samples can detect low concentrations of H. pylori antigens, reducing missed detection. Test sample accuracy rate 98.8%
3. Non-invasive sampling: Use stool samples, no gastroscopy or blood sampling is required.
4. Simple operation: No special equipment is required, suitable for use in homes, clinics and other scenarios.
5. Easy to read results: Read the results by eye, and positive and negative results are clearly visible.
Helicobacter pylori infection may exist in the human body for a long time without being detected, but it is an important cause of many stomach diseases, especially serious diseases such as gastric ulcers and gastric cancer. Timely detection and treatment of Helicobacter pylori infection is an important measure to protect stomach health.
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