GNL Explorers — interactive educational tools for type 1 diabetes

Hypo & Hyper Treatment

The rule of 15 is a starting point. This Explorer calculates your personal glucose rise from fast-acting carbohydrate and your correction dose for hyperglycaemia — based on your actual TDD and body weight, not population averages. Treat more precisely. Correct without the rebound.

GNL Explorers

The Glucose Never Lies® Hypo and Hyperglycaemia Explorer — educational output only. Not a prescription.

Printed from theglucoseneverlies.com — educational use only. Not a medical device. Generated:

Educational explorer

Hypo & Hyper Treatment

The rule of 15 is a starting point. This Explorer calculates your personal glucose rise from fast-acting carbohydrate and your correction dose for hyperglycaemia — based on your actual TDD and body weight, not population averages. Treat more precisely. Correct without the rebound.

How this explorer works

Three pathways, one shared tool. Expand this section for background on each pathway.

Understand how the calculation works In-depth explanation →

Hypo treatment pathway
The treatment dose is calculated from your body weight using a validated weight-based formula. Heavier individuals need more carbohydrate to raise glucose by the same amount. The dose also accounts for your CGM trend — a rapidly falling glucose needs more immediate carbohydrate than one that is stable or rising.

Hypo prevention pathway
This pathway uses the same insulin exposure engine as the GNL Integrated Exposure Explorer. It estimates how much carbohydrate may be needed before activity based on your current glucose, trend, recent insulin, and exercise type. It is an estimate, not a guarantee.

High glucose and ketones pathway
When glucose is persistently high or ketones are elevated, the priority is to identify whether insulin delivery has failed, correct with a reliable route (pen or injection), change the delivery site, and reduce or pause the AID system temporarily. The correction dose is based on a percentage of your total daily dose — 10% for mildly elevated ketones, 20% for significantly elevated. This follows established sick day guidance and is consistent with Tandem’s own T-Slim Survive and Thrive protocol.

Important — about this tool

This explorer is an educational tool built from population-level clinical data and established protocols. It shows estimated average responses — not individual predictions. Outputs are starting points for discussion with your diabetes care team, not instructions to act on alone.

This is not a prescription, not a medical device, and does not create a therapeutic relationship. Any changes to your insulin settings or diabetes management must be made with your diabetes care team.

Read the full GNL disclaimer · How GNL builds its tools and curates evidence

Shared inputs

Enter body weight and total daily dose below. Not all inputs are required for every tab.

Hypo treatment explorer

Enter your current glucose band, CGM trend arrow, and choose which food equivalents to display.

These are estimated doses based on weight and published guidance. Your diabetes team may have given you specific amounts — use those if you have them. If you are unwell and uncertain, seek medical attention.

Choose Simple for a quick action plan. Choose Detailed for deeper understanding of what is happening and why.

Food equivalents

  • Wait 15 to 20 minutes before re-treating
  • Do not add a 10g snack after treating — this is already accounted for in the AID system’s insulin suspension response
  • If you feel unwell or cannot swallow safely, use glucagon
  • These are estimated starting doses based on weight. Your diabetes team may have given you specific amounts — use those if you have them.
Results summary — copy and save

Important note

These are estimated doses based on weight and published guidance. Your diabetes team may have given you specific amounts — use those if you have them. If you are unwell and uncertain, seek medical attention.

Hypo prevention before activity

Estimate carbohydrate needed before exercise based on glucose, trend, recent insulin, and exercise type.

This pathway uses the same exposure engine as the GNL Integrated Exposure Explorer.

8.0 mmol/L

Recent bolus doses (optional, up to 4)

These are estimated doses based on weight and published guidance. Your diabetes team may have given you specific amounts — use those if you have them. If you are unwell and uncertain, seek medical attention.
V.Low Low Med High V.High E.High

Food equivalents

  • This is an estimate for the first 30 minutes of activity. Monitor glucose every 20 to 30 minutes during exercise.
  • If using Control IQ — start Exercise Activity mode 90 minutes before exercise where possible.
  • If eating within 2 hours of exercise — consider entering 75% of meal carbs into the pump (carbs × 0.75).
Results summary — copy and save

Important note

These are estimated doses based on weight and published guidance. Your diabetes team may have given you specific amounts — use those if you have them. If you are unwell and uncertain, seek medical attention.

High glucose and ketones action protocol

Enter your current glucose, ketone level, and AID system to see system-specific action steps.

Read more about why glucose goes high and what is happening physiologically. Read the full explanation of ketone types and what different levels mean.

16.0 mmol/L
These are estimated doses based on weight and published guidance. Your diabetes team may have given you specific amounts — use those if you have them. If you are unwell and uncertain, seek medical attention.

Choose Simple for a quick action plan. Choose Detailed for deeper understanding of what is happening and why.

Not sure what responsiveness level your system is running at? Use the AID Multi-System Explorer.

Results summary — copy and save

Important note

These are estimated doses based on weight and published guidance. Your diabetes team may have given you specific amounts — use those if you have them. If you are unwell and uncertain, seek medical attention.

Use this tool for education and discussion, not as medical instruction. Outputs are directional and based on population-level patterns. Individual responses vary. Any changes to management should be made with your diabetes care team.

Related resources

← AID System Explorer All GNL Explorers →

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