Helicobacter pylori determination by endoscopy test

What is the Helicobacter pylori IgA Antibody Test?

The Helicobacter pylori (H. pylori) IgA antibody test is a serological blood test used to detect immunoglobulin A (IgA) antibodies produced by the immune system in response to infection with the Helicobacter pylori (H. pylori) bacterium.

The H. pylori IgA antibody test indicates whether a person has been exposed to this bacterium either currently or in the past. If the test result is positive, a gastroenterologist may recommend additional tests (such as a breath test, stool test, or endoscopic examination) to confirm the presence of an active infection. Treatment for H. pylori infection typically includes antibiotics and medications that reduce stomach acid production.

H. pylori is most commonly transmitted through direct contact with saliva or by consuming contaminated food and water. Studies indicate that approximately 50% of the world's population is infected with this bacterium. Therefore, timely diagnosis of H. pylori infection is essential for effective treatment and reducing the risk of infection-related complications.

When May a Helicobacter pylori IgA Antibody Test Be Needed?

The Helicobacter pylori test may be performed in the following situations:

• Dyspepsia (unexplained upper abdominal pain lasting at least one month).
• Gastric or duodenal ulcer disease.
• Chronic gastritis.
• A history of peptic ulcer disease.
• A family history of gastric cancer in first-degree relatives.
• Long-term use of nonsteroidal anti-inflammatory drugs (NSAIDs) and proton pump inhibitors (PPIs).
• Anemia of unknown origin.
• MALT lymphoma.
• Partial gastrectomy due to gastric cancer.

The following symptoms may indicate H. pylori infection:

• Abdominal bloating or a feeling of fullness.
• Nausea and vomiting.
• Loss of appetite.
• Unexplained weight loss.
• Gastroesophageal reflux or heartburn.

Impact of Helicobacter pylori on Health

H. pylori is found in the stomach and duodenum. In the stomach, it survives the acidic environment by producing urease, an enzyme that neutralizes stomach acid. In the duodenum, although the environment is more alkaline, the bacterium continues to produce urease to neutralize acidic contents entering from the stomach and ensure its survival.

Although many people infected with H. pylori experience no symptoms, the infection can cause various forms of damage to the lining of the stomach and duodenum.

Studies have shown that individuals who do not carry H. pylori are less likely to develop various gastric and duodenal conditions, such as erosions, peptic ulcer disease, and chronic gastritis, and they also have a lower risk of developing cancer of these organs

Preparation for the Test:

The Helicobacter pylori test does not require any special preparation; however, patients should follow any individual instructions provided by their physician during the consultation.

Before the test, it is important to inform your physician about all medications you are taking. The use of certain medications for at least 2 weeks before testing, particularly proton pump inhibitors (PPIs), antibiotics, and antacids, may affect the test results.

The test is usually performed in the morning after an 8-12 hour fasting period.

How Is the Helicobacter pylori IgA Antibody Test Performed?

• A blood sample is collected from a vein.
• The blood sample is sent to a laboratory, where serological methods are used to determine whether IgA antibodies against H. pylori are present in the blood.
• Test results are typically available within a few days.