Sensor detects level of lithium meds in patient's bodies
Lithium can alleviate the symptoms of bipolar disorder and depression -- if taken in just the right amount. To precisely monitor the amount of this medication in the body, patients must undergo blood tests. But today, scientists report the development of a tiny sensor that detects lithium levels from sweat on the surface of a fingertip in about 30 seconds, without a trip to the clinic.