| Term | Definition |
| ACTH | adrenocorticotropic hormone (anterior pituitary) |
| ADH | antidiuretic hormone (posterior pituitary) |
| ANP | atrial natriuretic peptide (heart) |
| CRH | corticotropin-releasing hormone (hypothalmus) |
| DHEA | dehydroepiandrosterone (adrenal cortex) |
| EPO | Erythropoietin (kidney, liver) |
| FSH | follicle-stimulating hormone (anterior pituitary) |
| GH | growth hormone (anterior pituitary) |
| GHRH | growth hormone-releasing hormone (hypothalmus) |
| GnRH | gonadotroph-releasing hormone (hypothalmus) |
| IGFs | insulin-like growth factors (liver, other tissues) |
| LH | luteinizing hormone (anterior pituitary) |
| NE | norephinephrine (adrenal medulla) |
| OT | oxytocin (posterior pituitary) |
| PIH | prolactin-inhibiting hormone (dopamine) (hypothalmus) |
| PRH | prolactin-releasing hormone (hypothalmus) |
| PRL | prolactin (anterior pituitary) |
| PTH | parathyroid hormone (parathyroids) |
| T3 | triiodothyronine (thyroid) |
| T4 | thyroxine (thyroid) |
| TH | thyroid hormone (T3 and T4) (Thyroid) |
| TRH | thyrotropin-releasing hormone (hypothalmus) |
| TSH | thyroid stimulating hormone (anterior pituitary) |