You've been tracking your meals, activity, and glucose, and your appointment is coming up. Now what? Looking at pages of numbers can feel overwhelming, and it's easy to focus on the readings you wish were different.
A simple glucose log review before your visit can turn all that data into a few clear observations and questions. This guide shows you how to gather a snapshot, spot patterns, and share them with your care team in just a few minutes.
Gather a two-week snapshot
You don't need months of records. About two weeks of recent logs is usually enough to show your typical patterns without being too much to review. Pull together:
- Glucose readings from your meter, CGM app, or written log.
- Meal notes, even rough ones, like "big pasta dinner" or "skipped lunch."
- Activity notes, such as walks, workouts, or busy days on your feet.
- Medication notes, including any missed or late doses.
- Life notes: sleep, stress, illness, travel, or changes in routine.
If you use a planner, this is where it pays off. Our guide on how to use a daily diabetes planner shows a simple way to keep these notes in one place. Missing a few days is fine. Use what you have.
Look for patterns, not perfection
The goal isn't to grade yourself. It's to notice what tends to happen so you and your care team can talk about it. Everyone's glucose responds differently, so focus on your own patterns. Try looking through your logs with these questions in mind:
Time of day
Do readings tend to run higher or lower at certain times, like first thing in the morning, mid-afternoon, or before bed?
After meals
Are there certain meals or foods where readings afterward look different from usual? Are breakfast readings different from dinner readings?
Activity days
Do readings look different on days you walked or exercised compared to quieter days? Did you notice any lows during or after activity?
Sleep and stress
Did readings change after a poor night's sleep or a stressful day? Many people notice a link, but it varies from person to person.
Sick days
Were there days when you felt unwell? Illness can affect glucose, so it helps to mark those days clearly.
Write down two or three patterns that stand out. These are observations to discuss, not a reason to change anything on your own. Please don't adjust your medication or insulin based on your log review. Your care team will look at the full picture with you and decide on any changes together.
If you use a CGM: the AGP report
Many CGM apps can create an Ambulatory Glucose Profile, or AGP report. It layers your glucose data from many days onto a single 24-hour view, so you can see your typical day at a glance. It often includes time in range, which shows the share of time your readings were within a target range.
Targets are set individually, so ask your care team which ranges apply to you. If you're not sure how to read the report, our guide to CGM trend arrows and reports walks through the basics. You can also ask your clinic whether they'd like you to share or print the report before your visit.
Write down your top three questions
Appointments go quickly. Once you've noted your patterns, turn them into your top three questions and put them at the top of your page. For example:
- "My morning readings are often higher than the rest of the day. What could be going on?"
- "I've had a few lows on afternoons when I walk. How should I handle that?"
- "My readings looked different on nights I slept poorly. Is that something to watch?"
If you get through those and still have time, you can move on to your other questions. It can also help to note one thing that's going well, like a new walking habit or more regular meals. Your care team wants to hear about progress too, not just problems.
Share your glucose log review efficiently
A one-page summary helps your care team see the highlights quickly. Here's a simple template you can copy into a notebook or document:
| Pattern noticed | When | Possible factors | Question for my team |
|---|---|---|---|
| Higher readings before breakfast | Most mornings, past 2 weeks | Late snacks? Poor sleep? | What might be causing this, and what should I track? |
| Lower readings after walks | 3 afternoons this week | Longer walks than usual | How should I plan snacks or checks around activity? |
| Higher readings for a few days | Day 8–10 | Had a cold | What should my sick-day plan include? |
The rows above are only examples. Fill in your own patterns, and leave the blank row for anything new. Along with your summary, bring your device or report and a current medication list. Our checklist of what to bring to your diabetes appointment covers the rest.
When to talk to your care team
You don't have to wait for your appointment if your review turns up something worrying. Call your care team if you notice frequent lows, readings that stay high, or patterns that come with symptoms that concern you. If you have signs of a low, like shakiness, sweating, or confusion, follow the plan your care team gave you. Severe low blood sugar is an emergency, so call 911.
Reviewing your logs isn't about being perfect. It's about walking into your visit ready to have a useful conversation and walking out with a plan that fits your life.
