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Last reviewed: March 2026
Insulin is a high-alert medication. Dosing errors can cause severe hypoglycaemia and are potentially life-threatening.
This tool is for educational and reference purposes only. ICR and ISF estimates (500-rule, 1800-rule) are population starting points — they must be individualised and verified by the treating diabetes care team.
Do not use this tool as the sole basis for insulin dosing decisions. All calculations must be reviewed by a qualified clinician before implementation.