1. What is Insulin Sensitivity Factor?

The Insulin Sensitivity Factor (ISF), also called correction factor, represents how much 1 unit of rapid-acting insulin will lower your blood glucose. It's a crucial parameter for diabetes management, especially for insulin pump users and those on multiple daily injections.

2. How Does the Calculator Work?

The calculator uses the standard formula:

Where:

• \( ISF \) — Insulin Sensitivity Factor (mg/dL per unit)
• \( TDD \) — Total Daily Dose of insulin (units)

Explanation: The "1700 rule" is derived from clinical observations and provides a reasonable estimate for most adults with type 1 diabetes.

3. Importance of ISF Calculation

Details: Accurate ISF helps determine proper insulin correction doses to bring high blood glucose levels back to target range without causing hypoglycemia.

4. Using the Calculator

Tips: Enter your total daily insulin dose (basal + bolus) in units. The value must be greater than 0.

5. Frequently Asked Questions (FAQ)

Q1: Why 1700 in the formula?
A: 1700 is an empirically derived constant that works well for most adults. Some use 1800 for more aggressive correction or 1500 for more conservative.

Q2: Does this work for children?
A: Children may need different constants (often higher). Consult your endocrinologist for pediatric-specific calculations.

Q3: How often should I recalculate my ISF?
A: Recalculate whenever your TDD changes significantly (by 10% or more) or if you notice patterns of over/under correction.

Q4: What if my actual ISF seems different?
A: The formula provides a starting point. Individual factors like weight, activity level, and insulin resistance may require adjustments.

Q5: Are there alternative calculation methods?
A: Some use weight-based formulas (e.g., 3000-4000 divided by weight in pounds) or the "100 rule" for regular insulin.