Research Highlights:
- Three of the top four popular artificial intelligence (AI) tools – OpenAI's ChatGPT, Microsoft's Copilot and Perplexity AI – could not consistently identify if a home blood pressure monitor had passed clinical validation testing, with accuracy only 63% to 83% of the time. Google Gemini performed better but still provided incorrect responses about 10% to 15% of the time.
- All four tools misidentified various home blood pressure monitors as not meeting clinical standards even though the AI tool was verifying against the independent registries that list only validated blood pressure monitors.
- Researchers advise healthcare professionals and the public to confirm validation of home blood pressure monitors according to recognized independent, free and publicly available registries.
- Note: The studies featured in this news release are research abstracts. Abstracts presented at the American Heart Association's scientific meetings are not peer-reviewed, and the findings are considered preliminary until published as a full manuscript in a peer-reviewed scientific journal.
Embargoed until 8 a.m. ET/7 a.m. CT, Thursday, Oct. 8, 2026
Arlington, Va., Oct. 8, 2026 — Three of four leading AI-powered search tools accurately identified home blood pressure monitors that met validated clinical standards only 63%-83% of the time, according to preliminary research being presented at the American Heart Association's Hypertension Scientific Sessions 2026 . The meeting is in Arlington, Virginia, October 7-11, 2026, and is the premier scientific exchange focused on recent advances in basic and clinical research on high blood pressure and its relationship to cardiac and kidney disease, stroke, obesity and genetics.
High blood pressure is the number one risk factor for cardiovascular disease, affecting more than 125 million adults in the U.S. – about 47% – according to the American Heart Association's 2026 Heart Disease and Stroke Statistics Update . Only about 1 in 4 of those adults have their blood pressure within the target range of less than 120 mm Hg/80 mm Hg, and high blood pressure.
The 2025 American Heart Association Guideline for the Prevention, Detection, Evaluation, and Management of High Blood Pressure in Adults recommends that people use a home blood pressure monitoring device that has been validated for accuracy. People can talk with their clinician and visit www.validatebp.org
