Researchers have figured a way to use a smartphone's magnetometer to measure sugar and pH levels.
Researchers from the National Institute of Standards and Technology , Boulder, Colorado, say a smartphone compass could be used to analyze biomarkers in body fluids — blood, sweat, urine, or saliva — to monitor or diagnose disease.
Still, the prospect is"exciting," said Aydogan Ozcan, PhD, a bioengineering professor at the University of California, Los Angeles, who was not involved in the study."It might enable new capabilities for advanced sensing applications in field settings or even at home."using smartphones to put powerful medical devices in patients' hands. A new AI-powered app can use a smartphone camera to detect.
The hydrogel strip and solution being tested are placed in a tiny well clamped near the smartphone’s magnetometer. Only a small strip of hydrogel is needed,"like a pH test strip that you use for a pool," said first study author Mark Ferris, PhD, a postdoctoral researcher at NIST.
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