Brands AI mentions

#BrandMentioned in

Mentioned in on each AI engine, by brand
Mentioned in	ChatGPTChatGPT	Google AI ModeGoogle AI Mode
FoodMarble	87%	74%
Trio-Smart	87%	74%
Metabolic Solutions, Inc.	65%	57%
CommDx	30%	43%
QuinTron	39%	13%

Questions and answers

ChatGPTOct 28, 2026

If you’re getting bloated after eating certain foods, there are at-home breath tests that can help investigate whether the problem is lactose intolerance, fructose malabsorption, or small intestinal bacterial overgrowth (SIBO).

One important distinction: these are different from general “food sensitivity” tests. Breath tests measure gases produced during digestion, whereas many mail-in food sensitivity kits measure immune markers in your blood.

At-home food-related breath tests

Here are several providers serving U.S. customers that offer home collection kits you can order online.

1. Metabolic Solutions (MetSol)

(Best for specific food triggers)

Offers separate at-home breath tests for lactose intolerance and fructose malabsorption, listed at $209 each. You collect samples at home and mail them to the lab for analysis.

Useful if dairy, fruit, honey, or certain sweeteners seem to trigger bloating.

Visit MetSol's test shop shop.metsol.com

2. Trio-Smart Breath Test

Listed price: $369

Measures hydrogen, methane, and hydrogen sulfide to help evaluate SIBO and related intestinal overgrowth conditions. The kit is collected at home and mailed to a lab. Healthcare-professional review is part of the ordering process.

Useful if bloating comes with excessive gas, constipation, or diarrhea, rather than one obvious food trigger.

Visit Trio-Smart www.triosmartbreath.com order.triosmartbreath.com

3. QuinTron

Multiple test types

Sells at-home breath collection kits for lactose malabsorption, fructose malabsorption, and SIBO. Samples are sent for laboratory analysis, and the company advises reviewing results with a healthcare provider.

Browse QuinTron's breath tests checkout.breathtests.com

4. Commonwealth Diagnostics International (CDI)

Direct-to-patient ordering

Offers mail-in tests for lactose, fructose, and sucrose malabsorption, as well as SIBO/intestinal methanogen overgrowth. Its patient order page lists individual tests at $299.

View CDI's patient breath-test order form commdx.com

Which test should you choose?

If you notice bloating after…	Test to investigate
Milk, ice cream, or soft cheese	Lactose breath test
Apples, pears, honey, or some sweeteners	Fructose breath test
Many different meals, with persistent gas or constipation	SIBO breath test may be worth discussing
A broad range of foods, with no obvious pattern	Food and symptom diary first; a breath test won't identify every trigger

My starting recommendation: If you suspect specific foods, compare MetSol and QuinTron for lactose and fructose testing. QuinTron lists its kits at $195 each, while MetSol lists them at $209 each.

One caveat: a breath test doesn't diagnose every food sensitivity, and a positive result needs to be interpreted alongside your symptoms. A clinician or registered dietitian can help determine which test is appropriate.

Let’s narrow it down

What foods seem to make you bloated? For example, dairy, bread or pasta, fruit, beans, or seemingly almost everything?

If you tell me your main triggers, I can help identify which at-home test is most relevant rather than having you spend money on a test that may not answer your question.

Sources cited in this answer7

Google AI ModeOct 28, 2026

It is helpful to clarify a key medical distinction first: breath tests do not measure general "food sensitivities" (which are typically marketed as blood tests looking at IgG antibodies and are often considered unproven). Instead, at-home GI breath tests evaluate specific carbohydrate malabsorptions (like lactose or fructose) or gut bacteria imbalances like SIBO (Small Intestinal Bacterial Overgrowth)—which are primary culprits behind post-meal bloating and gas.

Several laboratories and companies provide mail-in, at-home breath test kits to check for these specific digestive issues:

Trio-Smart — Offers at-home mail-in kits testing for SIBO/IMO (measuring hydrogen, methane, and hydrogen sulfide gases) as well as specific malabsorption breath tests for lactose, fructose, and sucrose intolerance.
MetSol — Provides direct-to-consumer at-home gastrointestinal breath test kits for SIBO, lactose intolerance, and fructose malabsorption , analyzing hydrogen and methane gas levels from breath samples collected on a timed schedule.
AllClear Healthcare — Supplies at-home hydrogen and methane breath test kits targeted at SIBO, IBS overlaps, and specific sugar intolerances (lactose, fructose, sucrose).
Functional Gut Diagnostics — Offers specialized mail-in breath testing kits for assessing carbohydrate malabsorptions and SIBO using specific substrates like lactulose, glucose, lactose, or fructose.

Note: While some of these companies allow direct ordering, it is usually recommended to coordinate with a gastroenterologist or clinical dietitian, as accurate prep (such as strict fasting and specific low-fiber diets the day prior) is required to avoid false results.

If you'd like, I can share:

The strict preparation diet required the day before taking a breath test
The specific differences between SIBO and sugar malabsorption symptoms

Let me know how you'd like to proceed!

Sources cited in this answer6

Google AI ModeOct 19, 2026

When dealing with chronic bloating after eating, at-home breath tests are generally used to check for Small Intestinal Bacterial Overgrowth (SIBO), Intestinal Methanogenic Overgrowth (IMO) , or specific carbohydrate malabsorptions (such as lactose or fructose intolerance) rather than general "food sensitivities" (which are typically measured via blood antibody tests like IgG).

These diagnostic breath tests measure gases like hydrogen, methane, and sometimes hydrogen sulfide produced by gut bacteria fermenting sugars in your digestive tract.

Prominent services and kit providers offering at-home gastrointestinal breath testing include:

Trio-Smart SIBO Breath Test : Known as the first and primary at-home test to measure three gases—Hydrogen (H₂), Methane (CH₄) , and Hydrogen Sulfide (H₂S) . It is ordered online, shipped to your home, and analyzes breath samples collected at timed intervals after drinking a specialized substrate solution. You can explore details on the Trio-Smart SIBO Breath Test Platform.
QuinTron (EasySampler Kits) : A long-standing pioneer in breath-testing equipment. They offer direct-to-consumer/patient kits like the EasySampler Glucose Breath Test Kit to evaluate H₂ and CH₄ for SIBO/IMO. You can look into their process via QuinTron At-Home Breath Testing.
Metsol / Specialized GI Labs : Provide direct-to-consumer and clinician-backed at-home breath test kits targeting SIBO as well as specific carbohydrate malabsorptions like lactose and fructose intolerance. You can review options on the Metsol Shop.

What to Keep in Mind Before Testing

Strict Preparation: These tests require rigorous preparation, including a strict low-fiber/low-fermentation diet for 12–24 hours prior and a 12-hour fast, followed by timed breath collection after ingesting a specific sugar solution (like glucose, lactulose, or fructose).
Clinical Interpretation: Home convenience does not replace medical analysis. Factors like transit time, baseline gas levels, and recent antibiotic use can easily skew results. It is best to review and share the quantitative results with a gastroenterologist or a licensed healthcare provider to map out an accurate treatment plan.

If you'd like, let me know:

Are your bloating symptoms worse at specific times of day or after specific types of food (like dairy or high-fiber foods)?
Have you already tried an elimination diet?

I can help you figure out which specific type of test or professional consultation might suit your situation best.

Sources cited in this answer6

ChatGPTOct 19, 2026

If certain foods leave you feeling bloated, an at-home hydrogen breath test may help you identify whether you're having trouble digesting particular sugars, such as lactose in dairy or fructose in some fruits. Other breath tests look for small intestinal bacterial overgrowth (SIBO), which can also cause bloating and gas. These are different tests, so choosing the right one matters.

Here are the main services I found that offer at-home breath testing in the US.

At-home food sensitivity breath test services

1. FoodMarble

(Best for exploring food triggers)

Uses a reusable handheld breath analyzer with an app to measure hydrogen and methane while you track meals and symptoms. Its food intolerance kit lets you explore responses to fermentable sugars, including lactose and fructose.

Device listed at $299; check the current price and kit compatibility.

Official website and store

2. Gut-Chek

Offers individual, mail-in hydrogen/methane breath tests for specific digestive problems, including lactose intolerance and sucrose intolerance. You collect samples at home and send them to a laboratory for analysis.

Listed price: $209 per test.

Browse Gut-Chek tests

3. Trio-Smart

A clinical, at-home sample collection test for SIBO and related intestinal overgrowth conditions. It measures hydrogen, methane and hydrogen sulfide. It is more appropriate if your bloating comes with persistent gas, constipation or diarrhea than if you simply want to test individual foods.

Provider-ordered testing is available, with an online ordering option described by the company.

Trio-Smart official website

4. Commonwealth Diagnostics International

Offers mail-in breath tests for lactose and fructose malabsorption, as well as sucrose intolerance and SIBO. Check its ordering requirements, as access may depend on your healthcare provider.

View available breath tests

Which test should you choose?

If you notice bloating after…	Test to consider
Milk, ice cream, soft cheese	Lactose breath test
Fruit, juice, honey	Fructose breath test
A variety of foods, with no clear pattern	FoodMarble for tracking, or a clinician-guided evaluation
Many meals, especially with persistent gas or constipation	SIBO breath test

These tests assess specific digestive processes; they don't detect every possible food sensitivity.

My recommendation: If you're trying to identify which foods trigger your bloating rather than investigate a suspected medical condition, start by looking at FoodMarble. If you already know dairy or another particular sugar triggers your symptoms, a targeted lab-analyzed test like Gut-Chek may be a more direct option.

One important caution: consumer breath analyzers can help identify patterns, but they do not establish a medical diagnosis. Consider discussing persistent symptoms with a healthcare professional before spending money on testing.

One question to help narrow this down: What kinds of foods seem to cause your bloating most often?

Dairy, such as milk or cheese
Fruits, bread, pasta or other carbohydrates
Beans, onions, garlic or vegetables
A wide variety of foods, and I can't pinpoint a pattern yet

Sources cited in this answer13

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Which services provide at-home food sensitivity breath testing for someone dealing with post-meal bloating?

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Questions and answers

At-home food-related breath tests

Which test should you choose?

Let’s narrow it down

Sources cited in this answer7

Sources cited in this answer6

What to Keep in Mind Before Testing

Sources cited in this answer6

At-home food sensitivity breath test services

1. FoodMarble

2. Gut-Chek

3. Trio-Smart

4. Commonwealth Diagnostics International

Which test should you choose?

Sources cited in this answer13

Also asked as

Other topics in At-Home Health Test Kits

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