Home · Buying guides · Blood sugar monitoring guide
Buying guide

How to monitor blood sugar at home: a guide for type 2 diabetes

Home blood glucose monitoring is one of the most empowering tools for managing type 2 diabetes. Here is how to do it effectively.

When to test

Testing times vary by individual and treatment plan — always follow your diabetes team's advice. Common testing schedules for type 2: fasting (before breakfast), before meals, two hours after meals, and at bedtime. Testing before and after a meal shows you exactly how specific foods affect your glucose.

Understanding the numbers

UK target ranges (personalise with your team): fasting 4–7 mmol/L; two hours after meals below 8.5 mmol/L. A reading above these ranges is not a crisis — it is information. Note what you ate, your activity level and any stress factors. Trends over days and weeks matter more than individual readings.

Tracking the pattern

A blood sugar log over 2–4 weeks reveals patterns invisible from individual readings: which meals cause the biggest spikes, whether exercise reduces morning glucose, whether stress affects levels. Bring the completed log to every GP and diabetes nurse appointment.

Our picks compared

PickProductBest for
Top pick Blood glucose monitor with stripsDaily monitoring Check price →
Lancets Lancets fine gauge 200-packComfortable testing Check price →
App Glucose monitoring app guideDigital tracking Check price →
Diet Diabetes diet cookbook UKDietary management Check price →

As an Amazon Associate we earn from qualifying purchases. Prices shown on Amazon at time of click.

Frequently asked questions

Does type 2 diabetes always need blood sugar monitoring?
Not always — many people with type 2 managed by diet alone do not need to test regularly. Those on certain medications (particularly sulphonylureas or insulin) should test more frequently. Ask your diabetes team what is right for your specific management.
What causes high readings?
High-carbohydrate meals, illness, stress, insufficient physical activity, and some medications. A single high reading is not concerning — a pattern of consistently high readings warrants a conversation with your diabetes team.