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 can 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. Many modern glucose meters also connect to smartphones or computers for easier tracking and analysis of blood sugar trends over time.