"Cellphone Compass Measures Vital Health Compounds: NIST Study"
Researchers at NIST have developed a technique that utilizes an ordinary cellphone magnetometer to measure the concentration of glucose and pH levels with high accuracy, using magnetized hydrogel test strips. This method has the potential to rapidly and inexpensively measure various biomedical properties for disease monitoring and environmental toxin detection. The proof-of-concept study demonstrated the ability to measure glucose concentrations as small as a few millionths of a mole, and future improvements could enable the detection of DNA strands, specific proteins, and histamines at extremely low concentrations. The technique offers an inexpensive way to conduct testing, even in resource-limited locations, and could have applications in fields such as healthcare, environmental science, and food and beverage production.