Functional gastrointestinal testing can provide valuable information about digestive function, inflammation, intestinal barrier integrity, and microbial activity, but appropriate test selection and interpretation require integration with the patient’s clinical presentation. This one-hour, case-based continuing education program uses two patient cases to demonstrate the clinical reasoning involved in selecting and interpreting functional GI testing and translating relevant findings into patient care. Two clinicians will guide participants through patient history, prior conventional evaluation, test selection, interpretation of stool and breath testing, and identification of clinically actionable versus incidental, diet-related, or potentially misleading findings. Common testing limitations and sources of false-positive and false-negative results will also be addressed. Participants will learn how to integrate the clinical presentation and relevant testing results into a sequenced therapeutic plan using the 5R framework, with consideration of appropriate monitoring, reassessment, and retesting.