Doctors at Israel’s Sheba Medical Center have developed a blood test without removing any blood. A handheld device scans the blood vessels in the eye – ideal for those who dislike needles, and no laboratory involvement is necessary. It will be tested in zero-gravity by Israeli astronaut Eytan Stibbe.
https://unitedwithisrael.org/new-israeli-prickless-blood-test-heading-to-space/