Description

SIBO Breath Test – Glucose

Non-Invasive Test for Small Intestinal Bacterial Overgrowth (SIBO)

Shipping Nationwide

The Glucose SIBO Breath Test is a non-invasive diagnostic tool used to detect Small Intestinal Bacterial Overgrowth (SIBO)—a condition where excessive bacteria colonize the small intestine (greater than 1,000 organisms/mL). This test comes with a glucose substrate, which is used to provoke gas production if bacterial overgrowth is present in the upper small intestine.

What You Get With This Test

  • Hydrogen and Methane Gas Analysis from exhaled breath samples
  • Lab analysis performed within 1 business day after samples are received
  • Detailed report indicating:
  • Positive, negative, or borderline SIBO
  • Gas type dominance (hydrogen vs. methane)
  • Timeline of fermentation response
  • Physician-friendly results for guiding treatment options

Who Should Take This Test?

This test is appropriate for individuals experiencing:

  • Chronic bloating or excessive gas
  • Nausea, especially after meals
  • Abdominal discomfort or pain
  • Unexplained diarrhea or constipation
  • Malabsorption, weight loss, or nutritional deficiencies
  • Symptoms of Irritable Bowel Syndrome (IBS)
  • Post-antibiotic or post-infectious GI dysfunction
  • Autoimmune or inflammatory disorders with suspected GI involvement

📋 Sample Collection Overview & Instructions

This test includes a time-sensitive breath collection and requires strict preparation and fasting to ensure accuracy.

14 Days Before Sample Collection

Avoid the following:

  • Antibiotics
  • Colonoscopies
  • Barium enemas or radiologic studies
  • Recent diarrhea (wait 14 days if present)

24 Hours Before Sample Collection

You must follow a restricted diet to reduce background fermentation:

Allowed Foods:

  • Drinks: Plain water, plain coffee, plain tea (no sweeteners or cream)
  • Proteins: Baked or broiled chicken, fish, or turkey
  • Other Foods: Eggs, plain steamed white rice, plain white bread, plain white potatoes (no skin), clear chicken/beef broth
  • Seasonings: Pinch of salt or pepper only

Avoid:

  • Sugar, artificial sweeteners, dairy, fiber, fruits, vegetables, legumes, sauces, and fats
  • Medications like laxatives, antacids, Metamucil, Citrucel, or similar

12 Hours Before Testing

  • Begin an overnight fast (water only)
  • Do not eat or drink anything but water
  • You may brush your teeth as normal

Day of Collection

  • Continue fasting until the test is complete
  • Avoid for 1 hour prior to and during testing:
  • Smoking or vaping
  • Exposure to second-hand smoke
  • Brushing your teeth
  • Sleeping or exercising

Shipping & Processing

  • Shipping Time: 3–5 business days
  • Processing Time: 1 business day once the lab receives your sample
  • Shipping: Nationwide
  • Includes: Glucose substrate, collection tubes, prep instructions, and prepaid return mailer