H. Pylori Test Report: Stool Antigen vs Breath vs Blood Test (Video)

2:15 min

Read the full written guide: H. Pylori Test Report: Stool Antigen vs Breath vs Blood Test →

In this video we break down the three common H. pylori tests, blood, stool antigen, and urea breath, and explain what a positive result actually means. You’ll learn why timing and medication can change the outcome.

We also give practical steps to prepare for testing and the key tip to avoid false negatives. Remember, this is general information, not medical advice; always consult your doctor.

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Transcript

Positive H. pylori test? It might not mean you're infected now.

Positive H. pylori test? It might not mean you're infected now.

H. pylori Test Guide

I'll explain the three test types and why timing matters.

Three tests, three answers

Helicobacter pylori lives in the stomach lining. Blood tests look for antibodies, which can linger for years. Stool antigen and urea breath tests detect the bacteria right now. In South Asia many catch it as kids, often without symptoms.

Remember the difference

A blood test remembers the germ. A stool or breath test finds it.

Prep for stool or breath test

Stool antigen and breath tests show a current infection, but common medicines can hide the bug. Labs usually ask you to pause acid reducers, antibiotics, and bismuth for a few weeks. Skipping this step may give a false negative.

Before you book

Before you book, write down every stomach medicine and antibiotic you’ve taken in the last month, with dates. Show the list to the lab or doctor to avoid a wasted test.

PPI pause

PPIs, the ‘prazole’ family, should be stopped about two weeks before a stool or breath test, unless your doctor says otherwise.

Antibiotic/bismuth pause

Any antibiotics or bismuth-containing stomach products need a four-week gap before testing to prevent false negatives.

Reading test results

If the stool or breath test is positive, the germ is likely present now and your doctor will decide treatment. A negative result means none found, provided you paused medicines correctly. Borderline results usually get repeated. Blood positives only show antibodies, so doctors often confirm with stool or breath first.

The one key tip

The one thing to remember: pause acid-reducing meds for at least two weeks before a stool antigen or breath test, otherwise you risk a false negative.

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Read the full guide

Read the complete guide on thecareonline.com. This is general information, not medical advice.

Nothing on The Care Online is medical advice. Traditional practices are described as tradition, not as fact. Take a persistent or serious concern to a qualified professional. See how videos and posts are made on our methodology page.