How should an AI health chatbot explain a lab result without hiding its sources?

A health chatbot can draw from a chart and public medical sources, but those are not interchangeable. OpenAI says its healthcare product can connect authorized Epic context and official sources; Pew found that 20% of U.S. adults surveyed say they have used AI chatbots to understand lab results. The useful pilot number is not answer completion. In a sample of answers, can a patient identify the exact record or source behind each key sentence, spot when it is old, and tell when the tool has crossed from explaining into a question for their clinician? Count correction requests and time to the next safe step. A confident summary can still mislead if it makes a generic source feel personal. This is a product-design question, not medical advice. What would make that boundary clear enough before someone acts on an AI explanation?