Enter Fasting Glucose Records
Example Data Table
| Date | Fasting glucose | Unit | Recorded basal plan | Comment |
|---|---|---|---|---|
| 2026-03-01 | 118 | mg/dL | 12 units nightly | Within target |
| 2026-03-02 | 111 | mg/dL | 12 units nightly | Steady morning reading |
| 2026-03-03 | 124 | mg/dL | 12 units nightly | Slight rise after late meal |
| 2026-03-04 | 109 | mg/dL | 12 units nightly | Back in preferred range |
Formula Used
This safe version focuses on monitoring formulas rather than dose recommendations.
- Average fasting glucose = sum of fasting readings ÷ number of readings.
- Standard deviation estimates how far readings spread around the average.
- Coefficient of variation = standard deviation ÷ average × 100.
- Time in target range = readings within target ÷ total readings × 100.
- Low percentage = readings below low threshold ÷ total readings × 100.
- High percentage = readings above high threshold ÷ total readings × 100.
- Trend slope uses a simple linear regression across reading order to estimate whether the fasting pattern is rising, falling, or stable.
Clinician dosing methods vary by diagnosis, insulin sensitivity, meal pattern, activity, pregnancy status, steroid use, kidney function, and concurrent medicines. That is why this page intentionally does not output a dose.
How to Use This Calculator
- Choose the glucose unit used in the log.
- Enter the fasting target range your clinician has already set.
- Add low and high alert thresholds for context.
- Paste fasting readings, one per line, with optional dates.
- Add the current clinician-set basal plan only as a record.
- Press Analyze records to review averages, variation, and trend direction.
- Use the CSV and PDF buttons to save the summary for visits.
- Discuss any lows, highs, or trend changes with a licensed clinician before making insulin changes.
Frequently Asked Questions
1. Does this tool tell me how many insulin units to take?
No. This page only reviews fasting glucose records and recorded plans. Insulin dosing must be set or changed by a licensed clinician.
2. Why does the page ask for a target range?
The target range lets the tool measure how often fasting readings stay within the limit already chosen by the care team.
3. Can I use mmol/L instead of mg/dL?
Yes. Select mmol/L before submitting. The page converts values internally so all summary metrics stay consistent.
4. What does coefficient of variation mean?
It shows how variable fasting readings are relative to the average. Lower percentages usually indicate steadier mornings.
5. Why does the graph matter?
A graph makes patterns easier to see, such as steadily rising mornings, repeated lows, or stable readings across several days.
6. How many readings should I enter?
At least three are required, but seven to fourteen fasting readings usually give a more useful short-term pattern review.
7. Can this replace medical advice?
No. It supports recordkeeping and discussion. It cannot replace diagnosis, prescription decisions, or individualized diabetes care.
8. What should I do if readings look concerning?
Follow your existing care plan and contact a licensed clinician promptly, especially for repeated lows, very high readings, or illness.