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Correction Factor Formula:
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The Correction Factor (also called Insulin Sensitivity Factor) estimates how much 1 unit of rapid-acting insulin will lower your blood glucose. It's a crucial parameter for insulin pump users to calculate correction doses.
The calculator uses the standard formula:
Where:
Explanation: The 1800 rule is derived from clinical observations about average insulin sensitivity. Your actual sensitivity may vary and should be confirmed with your healthcare provider.
Details: An accurate correction factor helps prevent both hyperglycemia and hypoglycemia when making insulin dose adjustments. It's essential for effective diabetes management with insulin pumps.
Tips: Enter your total daily insulin dose (basal + bolus) in units. The value must be greater than 0. For best accuracy, use an average of several days' TDD.
Q1: Why is 1800 used in the formula?
A: 1800 is derived from clinical observations about average insulin sensitivity in adults with type 1 diabetes. Children may use different constants (e.g., 1500-1700).
Q2: How often should I recalculate my correction factor?
A: Recalculate whenever your TDD changes significantly (by 10% or more), or if you notice your correction doses aren't working as expected.
Q3: What if my actual sensitivity differs from the calculation?
A: The formula provides a starting point. Work with your healthcare provider to fine-tune based on your individual response to insulin.
Q4: Does this work for all insulin types?
A: This is designed for rapid-acting insulins (lispro, aspart, glulisine). Regular insulin may require different calculations.
Q5: What about the 1500 rule I've heard about?
A: The 1500 rule is sometimes used for regular insulin or for people who are more insulin sensitive. The 1800 rule is standard for rapid-acting insulins.