| Thyroid-stimulating hormone | |
|---|---|
| [[File:|250px]] | |
| Abbreviation | TSH |
| Molecular formula | Glycoprotein (~28 kDa); two subunits (α and β) with complex carbohydrate chains |
| Type | Pituitary glycoprotein hormone |
| Administration | Endogenous only |
| Bioavailability | N/A, regulated by hypothalamic TRH and feedback from T3/T4 |
| Synonyms | Thyrotropin, Thyrotropic hormone |
| Source | Anterior pituitary gland (thyrotrope cells) |
| Ray's verdict | Strongly negative, TSH itself is harmful, not just a marker, inflammatory and tissue-damaging |