The function of blood glucose meters has been advancing year by year, making easier and more accurate to measure. We have also begun to include additional functions, such as recording blood glucose levels measured on a daily basis and interworking with personal computers and smartphones. Toshiba has a lineup of low-noise CMOS operational amplifiers to amplify sensor signals to measure blood glucose levels with high accuracy, LDO regulators to enable the efficient operation of complex electronic circuits inside blood glucose meters, and TVS diodes (ESD-protection diodes) to protect blood glucose meters from external static electricity. These semiconductors are installed in a compact, lightweight package, contributing to the reduction of board space in order to increase the precision and functionality of blood glucose meters.