Iranian researchers have discovered an accurate and simple method to measure captopril, an inhibitor used for the treatment of hypertension and some types of congestive heart failure, according to Iran Nanotechnology Council (INIC). Using hypersensitive sensors, the new method gives a meticulous and fast measurement of the vital drug’s dosage. Sensors produced by this method are cheaper than other similar samples, have higher sensitivity, and the manufacturing process is biocompatible, Mehr News Agency reports. The sensors were successful in measuring captopril in real samples, including human blood serum and tablets. Results of the research have been published in Electrochimica Acta, vol. 164, 2015.