Breath Hydrogen (H₂) and Glucose (H₂O₂) Concentration (Exhaled Breath)

What This Test Measures

The test detects two key substances in your breath: hydrogen (H₂), which is produced when certain bacteria in your gut break down undigested carbohydrates, and hydrogen peroxide (H₂O₂), a marker related to glucose metabolism. These measurements help evaluate how efficiently your body absorbs and processes food.

Why It’s Done

Your healthcare provider may order this test if you have symptoms like bloating, gas, diarrhea, or unexplained weight changes that suggest digestive issues or carbohydrate malabsorption. It can also be used in research or specialized clinical settings to study metabolic processes.

How the Test Works

You’ll breathe into a special device that collects your exhaled air. The device analyzes the gases for hydrogen and hydrogen peroxide levels. The results are compared to a baseline to identify any abnormalities in carbohydrate digestion or metabolism.

Preparation Tips

Follow your provider’s instructions carefully. Avoid eating or drinking anything for at least 2 hours before the test, and refrain from smoking or chewing gum to prevent interference. Wear loose clothing for comfort.