Helicobacter pylori Tests
There are no risks or complications with a stool sample. But
if you do not wash your hands well after collecting the sample, you may spread
There is a slight risk (1 in 10,000) of puncturing the wall of
esophagus, stomach, or duodenum during an endoscopy to
collect stomach biopsy samples. The biopsy may also cause some bleeding at the
site where the samples are collected. But the bleeding usually stops
without treatment. For more information, see the medical test Upper
After an endoscopy
After the endoscopy, you may belch and feel bloated for a while. You
also may have a tickling, dry throat; slight hoarseness; or a mild sore throat.
These symptoms may last several days. Throat lozenges and warm saltwater
gargles can help relieve the throat symptoms. Do not drink alcohol after the
After the endoscopy, contact your doctor immediately if you:
- Vomit blood or notice black or bloody
- Have trouble swallowing or talking.
- Are short
of breath or have a fast heartbeat.
- Have increasing chest or
- Have neck or shoulder pain.
- Have a
Helicobacter pylori tests are used to detect
Helicobacter pylori (H. pylori) infection in the
stomach and upper part of the small intestine (duodenum).
Results from the urea breath test or a stool
antigen test are usually available within a few
hours. Results from a blood
antibody test are usually available within 24 hours.
Results from biopsy samples obtained by
endoscopy are usually available within 48 hours.
Results from a biopsy sample that is cultured can take up to 10 days.
Blood antibody test
The blood sample does not contain H. pylori antigens.
The blood sample contains H. pylori
Urea breath test
The breath sample does not contain the tagged
The breath sample contains the tagged
Stool antigen test
The stool sample does not contain H. pylori antigens. This is called a negative test result. However, a
negative stool antigen test does not always mean that you do not have an
H. pylori infection.
The stool sample contains H. pylori