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December 12, 2019 at 8:00 AMComments: 0 Faves: 0

Tattoos that changes color to indicate sugar level

By irfan12320 More Blogs by This Author

Researchers at the Technical University of Munich believe that tattoos have the potential to function as biosensors that record in real-time variations in the levels of various metabolic substances in the human body and represent that information visually by changing color.
The tattoos are applied following the conventional technique but using biotin tags that change color due to biochemical variations in the body.Researchers have developed three types of biosensors that react by colorimetry when changes occur in pH, glucose and albumin levels, a protein related to the functioning of the kidneys and liver.According to researchers, using tattoos as sensors is a simple, inexpensive, painless and permanent way to monitor the condition of patients.With the development of suitable sensors the technique can also be applied to the registration of electrolyte and pathogen concentrations, and even indicate the level of dehydration of a person.The idea is not new: in 2016 the Abyss Dermal project of the MIT Media Lab scanned this biointerfaces type using the surface of the body to transmit visual information.In the future, biotatuajes that change color depending on the glucose level "will offer diabetics a painless way to recognize when they need to inject insulin."
Besides, biotatuajes also have the potential to "monitor other biological variables associated with medical diagnoses and to encode data in the body," they explain.

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