Chapman University contributes to innovation: AI-powered app enables anemia screening using fingernail selfies
Peer-Reviewed Publication
Updates every hour. Last Updated: 4-Nov-2025 08:11 ET (4-Nov-2025 13:11 GMT/UTC)
A groundbreaking new study co-authored by Dr. L. Andrew Lyon, founding dean of Chapman University's Fowler School of Engineering, introduces an AI-powered smartphone app that noninvasively screens for anemia using a photo of a user’s fingernail. Published in PNAS, the study shows the app provides hemoglobin estimates comparable to traditional lab tests, with over 1.4 million tests conducted by 200,000+ users.
An estimated 83 million Americans and more than 2 billion people globally are at high risk for anemia—populations that stand to benefit significantly from this accessible screening tool. The app offers a low-cost, scalable solution that enhances access, especially in underserved and remote communities, while enabling real-time health monitoring and earlier intervention.
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