Levothyroxine Dose Calculator

This calculator estimates starting levothyroxine dose for patients undergoing thyroidectomy

Linear regression model trained on retrospective data collected at the University of Colorado

This calculator was not prospectively validated and not FDA approved for clinical use

1. Select Gender

Female
Male

2. Enter Weight, Height and Age

Height, cm:
Weight, kg:
Age:

3. Confirm Inclusion Criteria

Patient not pregnant
Patient was not taking thyroid hormones before surgery

4. Check if patient takes calcium supplement

Calcium supplements

5. Select target TSH

TSH target, uIU:

Calculated Dose

Recommended Dose