A urea breath test is one way doctors may test for Helicobacter pylori (H. pylori) infection. H. pylori is a type of bacterium that can cause digestive disorders. This article will explain the test, ...

Doctors order a blood urea nitrogen (BUN) test to measure the amount of urea nitrogen in your blood. It helps them see how well your kidneys are working. A BUN test measures how much blood urea ...

Preparation for the breath test involves abstaining from certain medications for several weeks and fasting food and water a few hours before the test. The test is safe during pregnancy and for ...