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)

  1. Wash and dry hands
  2. Prepare lancet
  3. Sample from side of finger (not tip)
  4. Apply to test strip
  5. Log result with time, fasting/postprandial state, activity

When to measure?

SituationRecommended timing
Type 1Pre/post meal, bedtime, overnight (4–10/day)
Insulin-using type 2Pre meal, bedtime (3–4/day)
Metformin-only type 2Fasting + postprandial (1–2/day)
PrediabetesWeekly screening 1–2x
Healthy curiosity3–7 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.