Helicobacter Pylori Urea Breath
Does this test have other names?
Urea breath test, UBT
What is this test?
This is a test that checks your breath for Helicobacter pylori (H. pylori), a common
infection. H. pylori bacteria are spread through contact with feces from an infected
person. Many people get this infection during childhood. The bacteria often live in
the stomach lining without causing any symptoms or problems. But for some people,
these bacteria cause ulcers and other stomach irritations.
While the bacteria live in your stomach lining, H. pylori make urea, a natural compound
in the body. As the bacteria make urea, they create ammonia and bicarbonate. Traces
of these can be found in your breath. This is proof that H. pylori is in your body.
Why do I need this test?
You may need this test if you have been treated for H. pylori and your healthcare
provider wants to know if the treatment worked. This test is the easiest way to find
out if H. pylori are living in your stomach.
What other tests might I have along with this test?
You might also need these tests:
What do my test results mean?
Test results may vary depending on your age, gender, health history, the method used
for the test, and other things. Your test results may not mean you have a problem.
Ask your healthcare provider what your test results mean for you.
The urea breath test is accurate more than 95% of the time. If the test is positive,
H. pylori is present. If it's negative, you likely do not have H. pylori in your stomach.
How is this test done?
This test is often done first thing in the morning. You may be asked not to eat or
drink anything or may be given a special meal to eat. You will also be given a drink
or capsule that contains urea. This urea helps the lab figure out if you have H. pylori.
About 10 to 20 minutes after taking the drink or capsule, you will breathe into a
special container. The air you breathe will be collected and analyzed for signs of
Does this test pose any risks?
This test poses no known risks.
What might affect my test results?
If this test is done too soon after treatment, you could get a false-positive result.
This means that the test could show that H. pylori are still present even though they
are not. To get the best results, you should be retested at least 4 weeks after treatment
for H. pylori.
Other factors that may affect results include:
The test is a good choice for children, but is less accurate in children younger than
How do I get ready for this test?
Follow your healthcare provider's instructions about not eating or drinking before
the test. You may be asked to stop taking certain medicines before the test.
Tell your provider about all medicines, herbs, vitamins, and supplements you are taking.
This includes medicines that don't need a prescription and any illegal drugs you may