# Thyroid Hormone Replacement After Radio Iodine: Value and Efficacy

> **NCT06647602** · — · NOT_YET_RECRUITING · sponsor: **University Medical Center Groningen** · enrollment: 40 (estimated)

## Conditions studied

- Differentiated Thyroid Cancer
- Thyroid Cancer
- Levothyroxine
- Liothyronine
- Thyroid Hormones

## Interventions

- **DRUG:** Euthyrox (levothyroxine)
- **DRUG:** Cytomel (liothyronine)

## Key facts

- **NCT ID:** NCT06647602
- **Lead sponsor:** University Medical Center Groningen
- **Sponsor class:** OTHER
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** NOT_YET_RECRUITING
- **Start date:** 2026-09-01
- **Primary completion:** 2028-03-31
- **Final completion:** 2028-12-31
- **Target enrollment:** 40 (ESTIMATED)
- **Last updated:** 2026-02-10

## Collaborators

- Radboud University Medical Center

## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT06647602

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT06647602, "Thyroid Hormone Replacement After Radio Iodine: Value and Efficacy". Retrieved via AI Analytics 2026-08-02 from https://api.ai-analytics.org/clinical/NCT06647602. Licensed CC0.

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