A new test could flag people at risk for anemia by filming their eyeballs — no needles required
A new needle-free test has been developed to estimate red blood cell counts by filming the eye. This technology could serve as a preliminary screening tool for anemia, particularly in low-resource settings. While promising, it is not yet ready to replace traditional blood tests and requires further validation.
- ▪The test uses videos of the eye to estimate red blood cell levels without needles.
- ▪In trials, the technology identified anemia over 80% of the time among 224 participants.
- ▪Experts believe it could improve access to blood monitoring in resource-limited environments.
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Health Heart & Circulation A new test could flag people at risk for anemia by filming their eyeballs — no needles required A new needle-free technology isn't ready to replace blood draws, but it could serve as a screening tool to flag people who need a full-blown blood test. By Clarissa Brincat published 26 May 2026 in News When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. A new test uses videos of the eye to estimate a person's red blood cell count.
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