Hypothyroidism

Thyroxine dose calculator

Method 1: 100µg for all. Within 25µg of final dose in 40% of patients.

Method 2: 1.6 µg per kg. Within 25µg of final dose in 59% of patients.

Method 3: 125 + bodyweight (kg) – age. Within 25µg of final dose in 72% of patients.

Click here for spreadsheet of normal association between TSH and free T4.