What should you know about diabetic monitors for type 2 diabetes?

A blood glucose meter uses a small finger-prick sample. A continuous glucose monitor uses a sensor under the skin to estimate glucose repeatedly and show trends. Your clinician may recommend one method, or both at different stages. A reading is useful when paired with its context: meal timing, activity, illness, sleep and medicines can all affect it.

Monitoring is different from a longer-term blood test, which gives a broader picture of glucose control. A single reading cannot describe the whole pattern.

Follow the schedule supplied by your diabetes team and record readings with meals, exercise and symptoms. Wash and dry your hands before a finger-prick test. Check that strips are in date and stored correctly, and do not share lancets or sensors. Learn what action to take for a low or high result; medicines should not be changed based on one unexpected reading without clinical advice.

Contact your care team about repeated readings outside your agreed range, frequent alarms, or symptoms that do not match the device. Get urgent help for confusion, fainting, severe breathing difficulty, persistent vomiting, or inability to keep fluids down. Treat suspected hypoglycaemia according to your personalised plan.

Ask which monitor suits your treatment, when to test, what your personal targets are, how to respond to alarms, and when the device or readings need checking.