What are the opening hours?

Monday 9am - 5pm Tuesday 9am - 5pm Wednesday 9am - 5pm Thursday 9am - 5pm Friday 9am - 5pm

Commonwealth Diagnostics International

Home
United States
Salem, MA
Commonwealth Diagnostics International

CDI offers products and services that aid the diagnosis of small intestinal bacterial overgrowth (SIBO) and irritable bowel syndrome (IBS).

Founded in 2015 in Salem, Mass., and operating out of its CLIA-certified laboratory and as an FDA-registered, ISO 13485-certified medical device manufacturer, Commonwealth Diagnostics International (CDI) helps providers identify and diagnose common sources of digestive distress and functional gastrointestinal ailments. CDI’s expansive portfolio of non-invasive at-home hydrogen and methane breath tests supports the diagnosis and treatment of Small Intestinal Bacterial Overgrowth (SIBO) and Intestinal Methanogen Overgrowth (IMO), as well as fructose malabsorption, lactose malabsorption, and sucrose malabsorption. Focused on patient-centric principles, CDI breath tests are easy-to-use, quick, and safe for patients and support meaningful GI health outcomes by helping steer each practitioner’s approach to dietary modification, homeopathic remedies, nutritional supplementation, immune support, high-quality probiotics, and additional testing.

10/16/2025

Which topic should we publish next for clinicians?

A) Mixed H₂/CH₄ curves & constipation
B) High baselines: retest vs. proceed?
C) “Dual peaks”: small bowel vs. colon
D) Glucose vs. lactulose: decision tree

Your vote guides our next clinical brief.

🔗 Catch past resources: commdx.com

10/13/2025

🌟 Patient Spotlight: “Smooth, clear, and well-communicated.” – Skip B. 🌟

Nothing makes us prouder than hearing from patients who felt supported at every step. Skip B. shared that CDI’s at-home breath test was “very smooth,” with “clear, easy-to-follow instructions,” and appreciated timely updates when the kit was received and when results were sent to the provider.

What Skip experienced is exactly what we aim to deliver every time:
✅ Simple, at-home collection with step-by-step guidance
✅ Proactive communication (kit received ➝ results delivered)
✅ Fast, clinically actionable results for you and your care team

Whether you’re evaluating SIBO, IMO, or carbohydrate malabsorption, we pair convenience with clinical rigor—that’s .

💙 Thank you, Skip, for trusting CDI!

🔗 Ready to learn more or start your test? Visit commdx.com

10/10/2025

🌐 New on the CDI Blog: Why Symptoms Alone Aren’t Enough

Bloating, pain, constipation, diarrhea—common symptoms, very different causes. Our latest post breaks down why a “treat-the-symptom” approach often misses the mark in functional GI care, and how hydrogen & methane breath testing adds the objective data clinicians need.

What you’ll learn

Symptom overlap is real: IBS, SIBO, IMO, and carbohydrate malabsorption can look identical at the surface—objective testing separates them.

Why hydrogen and methane matter: Detecting both gases improves accuracy, especially for methane-dominant cases linked to constipation (IMO).

Timing = diagnostic clarity: Guideline-aligned sampling every 15–20 minutes over 2.5–3 hours reduces false positives/negatives.

From data to decisions: How breath test patterns inform diet (targeted carbs—not blanket restriction), motility support, and follow-up strategy.

Patient impact: Faster answers, fewer trial-and-error cycles, and more personalized care plans.

How CDI does Breath Testing Done Right

GC-based analysis with dual detectors for precise H₂/CH₄/CO₂ quantification

North American Consensus & ACG–aligned protocols

Vial-based collection & verified stability to protect sample integrity

Clear, actionable reports that slot into clinic workflows

Read the full post and see how objective testing upgrades outcomes for both patients and providers:
🔗 https://commdx.com/why-symptoms-alone-arent-enough-the-critical-role-of-breath-testing-in-functional-gi-diagnostics/

09/29/2025

🌟 Client Spotlight: Stacey L’s At-Home Testing Experience 🌟

“Everything I needed was included, the instructions were clear and easy to follow, and I got my results a week after mailing the test. I’m very pleased with the service.”

Even though Stacey’s kit took a bit longer to arrive, once it did, the process was seamless—and fast:

✅ Clear, step-by-step instructions
✅ All materials included in the box
✅ Simple vial collection every 15–20 minutes
✅ Results delivered to her provider ~1 week after mailing

At Commonwealth Diagnostics International (CDI), we’re committed to making accurate, at-home hydrogen & methane breath testing straightforward for patients and actionable for providers.

Ready for answers about SIBO, IMO, or carb malabsorption? Learn more: commdx.com

09/26/2025

🌟 Functional Friday — Modern Gastro Podcast, Ep. 2 🌟
Shared Decisions > One-Size-Fits-All: When Patients Help Pick the Path, Outcomes Improve
“If a patient deems a therapy non-viable, it’s non-viable—full stop. We move on. And efficacy is higher when patients are involved in decision-making… as long as there’s a foundation of honesty.” — Episode 2
Why this matters
Therapy fit trumps therapy force. When a plan doesn’t fit a patient’s life, adherence drops and outcomes suffer.

More options = more wins. The growing toolbox (dietary strategies, behavioral therapies, targeted meds, motility work, validated diagnostics) means you can pivot quickly without losing momentum.

Honesty is clinical data. Transparent symptom reporting and prep adherence are as important as the test itself.

Where CDI helps the shared-decision process
Clear, validated inputs: Hydrogen + methane breath tests (North American Consensus & ACG-aligned; 15–20-min intervals over 2.5–3 hrs) provide objective data to co-author a plan with your patient.

Prep made practical: Step-by-step instructions, reminders, and fast TAT reduce friction—so patients can say “yes” (and stick with it).

Actionable reporting: Results map to SIBO, IMO, and carb malabsorption patterns—supporting tailored dietary, motility, or behavioral options your patient can choose from.

👂 Pro tip for providers: Open each visit with, “Which of these options feels most doable for you over the next 4–6 weeks?” Then align testing, nutrition, and mind–gut tools to that choice.
🎧 Catch Episode 2 for more on building flexible, patient-centered GI care—and why shared decisions improve efficacy.
🔗 Learn how CDI delivers Breath Testing Done Right: https://commdx.com

09/22/2025

What’s the biggest bottleneck between ordering a breath test and starting treatment?

A) Waiting for results
B) Interpreting borderline curves
C) Coordinating diet changes
D) Insurance/authorization

👇 Vote + comment why. We’ll share practical fixes and tools you can use next week.

🔗 Resources: commdx.com

09/20/2025

🌟 Functional Friday — Modern Gastro Podcast, Ep. 2 🌟
Guest Spotlight: Dr. Nitin Ahuja on Precision, Phenotypes & the Future of GI Care

“Precision—starting with how we define conditions—matters. Then leverage big data to answer thorny questions and characterize true phenotypes rigorously.” — Dr. Nitin Ahuja

Why this moves GI forward

Sharper definitions → better trials: Refining diagnostic terminology reduces heterogeneity and noise in research and practice.

Phenotyping with data at scale: Linking symptoms, physiology, and outcomes enables targeted pathways—not one-size-fits-all.

From labels to personalization: The future is matching the right patient to the right intervention at the right time.

Where CDI fits

Personalized care starts with clean inputs.
Commonwealth Diagnostics International (CDI) provides hydrogen & methane breath testing aligned with North American Consensus & ACG guidance (15–20 min intervals over 2.5–3 hrs). That standardization supports:

Reliable phenotyping: Distinguish small-intestinal vs. colonic fermentation patterns for SIBO/IMO and carb malabsorption.

Actionable decisions: Pair results with diet (e.g., low-FODMAP under a GI RD), motility strategies, and mind–gut therapies.

Research-ready data: Consistent protocols enable apples-to-apples comparisons across cohorts.

🎧 Dive into Ep. 2 to hear Dr. Ahuja on precision language, big-data phenotyping, and what’s next for truly individualized GI care.

🔗 Learn how CDI delivers Breath Testing Done Right: commdx.com

09/18/2025

Myth: “One Spike = SIBO.”

Fact: Interpretation relies on pattern + timing, not a single blip. For SIBO, guidelines emphasize a sustained H₂ rise (≥20 ppm within ~90 min); for IMO, CH₄ ≥10 ppm is clinically meaningful. CDI reports highlight the full curve to support guideline-aligned calls.

🔗 See our approach: commdx.com

09/16/2025

Targeted Answers for Fructose Symptoms

Bloating or urgency after fruit, honey, or HFCS? Don’t over-restrict—test. CDI’s breath testing can identify fructose malabsorption, helping you tailor your diet precisely (without unnecessary eliminations).

Outcome: Specific triggers → targeted nutrition → better adherence.

🔗 Learn more: commdx.com

09/14/2025

🌟 Functional Friday — Modern Gastro Podcast, Ep. 2 🌟
Beyond Rx: Building a wider toolbox for IBS & constipation

🎥 In this week’s clip, our guests spotlight a big shift in GI care:

“Non-pharmacologic interventions are developing an evidence base… from exclusion diets and specific whole foods (there’s a new paper on kiwi fruit for constipation & IBS!) to herbs and supplements tested in placebo-controlled trials. The end result? A broader suite of therapies and a higher likelihood of efficacy for the full spectrum of IBS patients.”

What this means for practice

Diet-first, done right: Structured elimination with re-introduction (e.g., low-FODMAP under a GI RD) + targeted whole-food strategies (hello, kiwi fruit studies) can meaningfully improve symptoms.

Evidence is growing: Carefully selected botanicals/supplements are being evaluated in controlled trials—promising additions when used within a guideline-based plan.

Integrated teams win: Bringing “orthodox” GI specialists, GI dietitians, and behavioral health together improves adherence, personalization, and outcomes.

Where CDI fits

Great care starts with a precise map. Commonwealth Diagnostics International (CDI) provides hydrogen and methane breath testing aligned with North American Consensus and ACG guidance (15–20 min sampling over 2.5–3 hrs). That clarity helps you:

Differentiate SIBO/IMO from colonic fermentation patterns

Pair results with individualized nutrition, motility support, and mind–gut therapies

Reduce guess-and-check, speed the right intervention

🎧 Watch the full Episode 2 of the Modern Gastro Podcast (hosted by Craig S. Strasnick) and see how a broader, evidence-based toolkit changes the game for functional GI care.

🔗 Learn how CDI delivers Breath Testing Done Right: commdx.com

09/10/2025

A Simple Water Rinse Can Improve Early Readings

Did You Know? A quick water rinse before each sample helps reduce oral fermentation effects on early hydrogen values—supporting cleaner baselines and more interpretable curves. It’s one of several small steps that boost accuracy.

🔗 Get the full prep checklist: commdx.com

09/08/2025

Precision You Don’t See: How We Prevent Instrument Drift

Lesson from the Lab: Subtle analyzer drift can skew gas values. CDI combats this with NIST-traceable calibrations, built-in drift checks, and automatic re-runs on flagged samples to ensure reproducibility.

Result: High-fidelity curves you can trust—first time and every time.

🔗 See how CDI safeguards accuracy: commdx.com

Address

Salem, MA

Opening Hours

Monday	9am - 5pm
Tuesday	9am - 5pm
Wednesday	9am - 5pm
Thursday	9am - 5pm
Friday	9am - 5pm

Telephone

+18882585966

Website

https://biolinks.heropost.io/commdx

Alerts

Be the first to know and let us send you an email when Commonwealth Diagnostics International posts news and promotions. Your email address will not be used for any other purpose, and you can unsubscribe at any time.

Contact The Practice

Send a message to Commonwealth Diagnostics International:

Shortcuts

Address
Telephone
Opening Hours
Alerts
Contact The Practice
Claim ownership or report listing

Want your practice to be the top-listed Clinic in Salem?