i.ytimg.com/vi/NkZ9WIlkhdo/maxresdefault.jpg

Researchers at the UW have developed a new blood-clotting test that uses a single drop of blood and a smartphone vibration motor and camera.

Phone app can help detect blood's ability to clot - Technology Org

Blood clot testing using smartphones

Smartphones for blood clot tests, Science News

] `maxresdefault` doesn't exist sometimes · Issue #340 · yt-dlp/yt-dlp · GitHub

Blood clot testing using smartphones

All about Thumbnail Images as ytimg maxresdefault especially in Search