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Educational tool · Last reviewed: March 2026
This tool provides weight-based starting dose estimates for levothyroxine. These are population-level starting points only.
Actual doses must be individualised based on clinical response, serial TSH monitoring, symptoms, and comorbidities. Doses should be titrated gradually with regular laboratory review.
Always confirm dosing with the treating clinician and follow local guidelines. Recheck TSH approximately 6–8 weeks after any dose change.