Tattoo indicators
February 19th, 2009 by rbanks
Tattoo Doubles as a Blood Glucose Level Monitor: Rebellious Yet Cautious
"A Cambridge laboratory has developed a special ink for tattoos that changes color based on glucose levels in the blood. On a related note, diabetes is now the hippest metabolic syndrome in town. The ink is made up of a bunch of tiny spheres, about 120 nanometers across, that contain "the glucose detecting molecule, a color-changing dye, and another molecule that mimics glucose." Those molecules are moving around in the spheres, and when they near the surface, they grab onto either glucose or the molecule that mimics glucose. If they mostly latch onto real glucose, the ink (and consequently the tattoo) will look yellow, but if they grab the fake glucose, the tatt will look purple, indicating a low level of glucose in the bloodstream."
Gizmodo
