New Tech Tracks Blood Sodium Without Needle: Study

Scientists have developed a new method to monitor sodium levels in the blood without drawing a single drop.

- ANI

By combining terahertz radiation and optoacoustic detection, they created a noninvasive system that tracks sodium in real-time, even through the skin. The approach bypasses traditional barriers, such as water interference, and opens up the potential for fast and safe diagnostics in humans.

Accurate measurement of blood sodium is essential for diagnosing and managing conditions such as dehydration, kidney disease and certain neurological and endocrine disorders.

Terahertz radiation, which falls between microwaves and the mid-infrared region of the electromagnetic spectrum, is ideal for biological applications because it is low-energy and non-harmful to tissues, scatters less than near-infrared and visible light and is sensitive to structural and functional biological changes.