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Rapid melatonin test can help astronauts and others easily monitor their biological rhythm
- April 15, 2026 at 4:40 PM
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A simple test developed at Washington State University could eventually allow astronauts and others in round-the-clock occupations to monitor their biological rhythms in just minutes using a drop of blood, a paper test strip, and a smartphone-based reader. An interdisciplinary team of WSU researchers created an inexpensive, 15-minute test using fluorescent nanoparticles to measure melatonin levels, which rise and fall along with a person's internal biological clock.
Originally published at Phys.org