A glucose meter is a medical device used to measure the concentration of glucose in the blood. It is commonly used by individuals with diabetes to monitor their blood sugar levels. The device typically requires a small drop of blood, which is obtained by pricking the skin with a lancet. The blood is then placed on a test strip, and the meter provides a reading within seconds. These meters help users manage their condition by providing real-time data on their blood sugar levels. Regular monitoring can assist in making informed decisions about diet, exercise, and medication, ultimately improving overall health and well-being for those with diabetes.