| Rank | Clinic Name | Patient Rating | Country | Lead Doctor | experience | Techniques | Best For | Why It’s Ranked | Accreditations |
|---|---|---|---|---|---|---|---|---|---|
| #1 | 2.7 / 5 | Minato City, Japan | — | — | Thyroid function tests (including T3, T4, TSH) | — | — | Joint Commission International | |
| #2 | 3.2 / 5 | Osaka, Japan | — | 3,000+ treatments | Thyroid function tests (including T3, T4, TSH) | — | — | Fellow, American College of Surgeons |