As practices across the country continue to adopt non-invasive hydrogen and methane breath testing to improve diagnostic accuracy for functional gastrointestinal conditions, one performance metric is proving especially critical to clinical and operational success: the test return ratio.
Simply put, your return ratio is the percentage of breath test kits shipped to your practice (or directly to patients) that are completed, returned, and analyzed. It’s a direct measure of patient compliance and process efficiency — and a strong indicator of your breath testing program’s clinical impact.
Why Return Ratio Matters
Each breath test represents a potential diagnosis, a treatment decision, and a better outcome for your patient. When kits go unregistered or unreturned, it’s not just a logistical issue — it’s a missed opportunity for care.
Low return ratios also burden clinical staff with administrative follow-up, delay treatment planning, and can skew practice-level data when evaluating test utilization and patient engagement. Conversely, practices with high return ratios typically see:
- More actionable diagnostic results
- Higher provider satisfaction and confidence in testing
- Faster patient follow-up and better continuity of care
- Greater operational efficiency and reimbursement alignment
What Impacts Return Ratios?
Across CDI’s national network of healthcare providers, we see top-performing practices achieving a return ratio of over 70%. So what makes the difference?
Several key drivers influence return ratio:
- Kit registration compliance: Practices that consistently register kits — or ensure that patients do — see significantly higher test completion rates. Breath test kit registration enables proactive support from CDI’s patient services team, including automated reminders, educational resources, and troubleshooting.
- Direct-to-patient outreach: For kits shipped directly to patients, including complete and accurate contact information (especially email and phone) with the provider order form, enables CDI to engage patients promptly, increasing the likelihood of follow-through.
- Workflow integration: Practices that establish a standard operating procedure — such as having the patient complete the kit registration at the point of handoff and returning the provider portion of the kit requisition form to CDI — minimize missed registrations and create accountability in the handoff process.
- Patient education and expectations: Clear communication with patients about how and when to complete the test, along with the importance of the results to their care plan, can significantly improve compliance.
How CDI Helps
MyGI Gateway, CDI’s secure provider platform, gives practices real-time visibility into every test shipped and returned. Practices can monitor compliance, track kit registration status, and follow the full test lifecycle from order to result. In addition, CDI’s dedicated Provider Relations Specialists are available to review your metrics and help optimize workflows tailored to your staff and patient population.
With rising demand for efficient, value-based diagnostics, maintaining a strong return ratio is no longer just an operational detail — it’s a core driver of clinical quality. CDI remains committed to supporting our partners in achieving the highest standards in breath testing utilization and patient-centered care.



