Helicobacter pylori tests?

The Urea Breath Test (UBT) is a safe, easy, and accurate test for the presence of H. pylori in the stomach. The breath test relies on the ability of H. pylori to break down the naturally occurring chemical, urea, into carbon dioxide which is absorbed from the stomach and eliminated from the body in the breath. Ten to 20 minutes after swallowing a capsule containing a minute amount of radioactive urea, a breath sample is collected and analyzed for radioactive carbon dioxide. The presence of radioactive carbon dioxide in the breath (a positive test) means that there is active infection. The test becomes negative (there is no radioactive carbon dioxide in the breath) shortly after eradication of the bacterium from the stomach with antibiotics. Despite the fact that individuals having the breath test are exposed to a minute amount of radioactivity, the breath test has been modified so that it also may be performed with urea that is not radioactive.
What is the advantage!
Advantage:
1. simple (no need to perform endoscopy to take biopsy, no need to save stool, no need to take blood, can be done by any doctor or technician)
2. accurate
3. harmless
4. quick
5. easy to interpret