What is the primary purpose of a glucose meter?

The primary purpose of a glucose meter is to measure blood glucose levels. This tool is essential for individuals with diabetes, as it allows them to monitor their blood sugar levels at various times throughout the day. By obtaining accurate readings, users can make informed decisions about their diet, medication, and overall diabetes management. Regular monitoring helps to prevent both hyperglycemia (high blood sugar) and hypoglycemia (low blood sugar), which can lead to acute and potentially severe health problems.

The other options, while related to managing health, do not pertain to the specific function of a glucose meter. Administering insulin injections is a separate process and typically requires different equipment, such as syringes or insulin pens. Tracking dietary intake involves keeping a food journal or using apps designed for that purpose, rather than measuring glucose levels directly. Heart rate monitoring is done with other devices, such as heart rate monitors or fitness trackers, which measure cardiovascular health rather than glucose levels. Thus, the glucose meter's main and crucial function remains to measure blood glucose, ensuring that individuals can effectively manage their diabetes.