Tracking glucose isn't just measuring — it's measuring at the right time, with the right method, in the right log format.
Manual tracking (finger prick)
- Wash and dry hands
- Prepare lancet
- Sample from side of finger (not tip)
- Apply to test strip
- Log result with time, fasting/postprandial state, activity
When to measure?
| Situation | Recommended timing |
|---|---|
| Type 1 | Pre/post meal, bedtime, overnight (4–10/day) |
| Insulin-using type 2 | Pre meal, bedtime (3–4/day) |
| Metformin-only type 2 | Fasting + postprandial (1–2/day) |
| Prediabetes | Weekly screening 1–2x |
| Healthy curiosity | 3–7 day CGM trial |
CGM tracking
- 14-day continuous reads
- Trend arrows
- Hypo/hyper alarms
- Time in Range reports
How to log
- Glucose value
- Time + meal status
- Foods + carbs
- Insulin/medication
- Activity
- Notes (stress, illness, alcohol)
Sharing with your clinician
Most apps generate PDF reports. Share last 14 days before appointments — TIR, average, variability, hypo frequency.
Common mistakes
- Only fasting (skipping postprandial)
- Using same finger repeatedly
- Not checking strip expiry
- Not logging (only reading)
- Focusing on single value vs trend
Frequently asked questions
How many times per day should I measure?
Depends on type and treatment. Type 1: 4–10/day. Metformin-only type 2: 1–2/day. Prediabetes: weekly.
CGM or finger prick — which is more accurate?
Finger prick is the lab gold standard. Modern CGMs are >90% accurate and add trend visibility.
When to measure postprandial?
2 hours after start of meal. Target <140 mg/dL (healthy), <180 mg/dL (diabetes).
Is glucometer calibration needed?
Most modern meters come pre-calibrated. New strip vials may require code entry.
Medical disclaimer: This content is for educational purposes only and does not replace individual medical advice.