Hormones are special chemical messengers in the body that are created in the endocrine glands, being secreted directly into the blood, which carries them to organs and tissues of the body to exert their functions. They work slowly, over time, and affect many different processes, including:

  • Development and growth
  • Metabolism of food items
  • Sexual function and reproductive growth and health
  • Cognitive function and mood
  • Maintenance of body temperature and thirst


Endocrine glands, which are special groups of cells, make hormones. The main hormone-producing glands are:

  • Pituitary: Considered the "master control gland," the pituitary gland controls other glands and makes the hormones that trigger growth.
  • Pineal: Also called the thalamus, this gland produces serotonin derivatives of melatonin, which affects sleep.
  • Hypothalamus: The hypothalamus is responsible for body temperature, hunger, moods and the release of hormones from other glands; and also controls thirst, sleep and sex drive.
  • Thyroid: The thyroid produces hormones associated with calorie burning and heart rate.
  • Parathyroid: This gland controls the amount of calcium in the body.
  • Thymus: This gland plays a role in the function of the adaptive immune system and the maturity of the thymus, and produces T-cells.
  • Adrenal: Adrenal glands produce the hormones that control sex drive and cortisol, the stress hormone.
  • Pancreas: This gland produces the insulin that helps control blood sugar levels.
  • Testes: Only in men, the testes produce the male sex hormone, testosterone, and produce sperm.
  • Ovaries: Only in women, the ovaries secrete estrogen, testosterone and progesterone, the female sex hormones.

Glands work together to create and manage the body's major hormones. These organs secrete hormone in microscopic amounts and it takes only a tiny amount to bring about major changes in cells or even the whole body. Even a very slight excess of hormone secretion can lead to disease states, as can the slightest deficiency in a hormone. Hormone diseases also occur if your body does not respond to hormones the way it is supposed to. Hormone disorders are diagnosed in the laboratory as well as by clinical appearance and features. Laboratory tests can measure the hormone levels in bodily fluids such as the blood, urine, or saliva.


Testosterone - the main sex hormone in men. It causes puberty, increases bone density, triggers facial hair growth, and causes muscle mass growth and strength.
Estrogen (or estradiol) - the main sex hormone in women. It causes puberty, prepares the body and uterus for pregnancy, and regulates the menstrual cycle.
Progesterone - similar to estrogen but is not considered the main sex hormone. Like estrogen, it assists with the menstrual cycle and plays a role in pregnancy.
Cortisol - the "stress hormone" due to the way it assists the body in responding to stress.
Melatonin - whose levels change throughout the day, increasing after dark to trigger the responses that cause sleep.


Creative Biolabs offers an extensive range of IVD antibodies to the biomarkers of the most common hormone diseases, including antibodies to the thyroid hormones (TSH, T3 and T4) and adrenal hormones (e.g. cortisol and ACTH), important biomarkers of fertility systems (e.g. hCG, FSH, PAPP-A, LH), bone and calcium metabolism (e.g. PTH and osteocalcin) as well as diabetes and obesity (e.g. insulin and human growth hormone).

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