| CH | Congenital hypothyroidism |
| CH-Tx- | Congenital hypothyroidism treated with L-T4 |
| CNS | Central nervous system |
| DIO2 | Type 2 deiodinase |
| DIO3 | Type 3 deiodinase |
| DUOX2 | Dual oxidase 2 |
| ERPs | Event related potentials |
| fMRI | Functional magnetic resonance imaging |
| FOXE1 | Forkhead Box E1 |
| FT3 | Free T3 |
| FT4 | Free T4 |
| IQ | Intellectual quotient |
| IYD | Iodotyrosine deiodinase |
| LL-SEP | Long latency somatosensory evoked potential |
| L-T3 | Liothyronine |
| L-T4 | Levothyroxine |
| MCT10 | Monocarboxylate transporter 10 |
| MCT8 | Monocarboxylate transporter 8 |
| MRI | Magnetic Resonance Imaging |
| msdMRI | Multi-Shell diffusion MRI |
| NKX2-1 | NK2 homeobox 1 |
| NKX2-5 | NK2 homeobox 5 |
| OATP1C1 | Organic anion-transporting polypeptide 1c1 |
| PAX8 | Paired box 8 |
| RXR | Retinoid X receptor |
| Scielo | Scientific Electronic Library Online |
| SLC26A4 | Solute carrier family 26 member 4 |
| SLC5A5 | Solute carrier family 5 member 5 |
| T3 | Triiodothyronine |
| T4 | Thyroxine |
| TG | Thyroglobulin |
| THH | Thyroid hormone hyposensitivity |
| THs | Thyroid hormones |
| TPO | Thyroid peroxidase |
| TRα1 | Thyroid hormone receptor-α1 |
| TRβ1 | Thyroid hormone receptor β1 |
| TRβ2 | Thyroid hormone receptor β2 |
| TSH | Thyrotropin |
| TSHR | Thyroid stimulating hormone receptor |