PyTest

The PyTest uses Urea Carbon-14 which is a radioactive tracer. It is used to diagnose stomach ulcers caused by a certain kind of bacteria known as Helicobacter pylori or H. pylori . This agent is taken by mouth (it is a capsule). If any H. pylori bacteria are present in the stomach, they will cause the urea C 14 to be broken down into radioactive carbon dioxide gas. The amount of gas can be measured and the presence or absence of bacteria can be determined.

Test Preparation

  • Do not eat or drink anything six hours before the test.
  • Please check with your physician for instructions about stopping any medications that you are taking.
  • No antibiotics for four weeks prior to the test.
  • No medicines containing Bismuth (e.g. Pepto-Bismol) for four weeks prior to the test.
  • No proton pump inhibitors for two weeks prior to the test. Please check with your physician before discontinuing medication.

Exam Procedure

You will be asked to swallow a small capsule containing a radioactive tracer. Ten minutes later, you will be asked to blow into a balloon. The balloon is sent out for measurement. If the test shows the presence of the bacteria, your physician will begin treatment (usually involves antibiotics).