Analyzes for hormones

Aldosterone in the blood

Mineralocorticoids - aldosterone and deoxycorticosterone - are formed in the adrenal cortex. Aldosterone is synthesized from cholesterol in the cells of the glomerular layer of the adrenal cortex.

Angiotensin I and II in the blood

Renin, which enters the blood from the juxtaglomerular apparatus of the kidneys, cleaves the angiotensinogen decapeptide angiotensin I, which, in turn, under the influence of the ACE, two amino acids are cleaved and angiotensin II is formed. Angiotensin II has two main functions: it stimulates the synthesis and secretion of aldosterone in the adrenal cortex and causes a reduction in peripheral blood vessels.

Renin in the blood

Renin is a proteolytic enzyme secreted by a group of cells located in the immediate vicinity of the renal glomeruli (and therefore called the juxtaglomerular apparatus).

Antidiuretic hormone in the blood

Antidiuretic hormone is a peptide consisting of 9 amino acid residues. It is synthesized as prohormone in hypothalamic neurons, whose bodies are located in supraoptic and paraventricular nuclei.

Hormonal regulation of spermatogenesis

The main functions of male sex glands (testicles, or testicles) are the synthesis and secretion of male sex hormones (androgens) and spermatogenesis, that is, the formation and development of spermatozoa.

Hormonal regulation of the menstrual cycle

The menstrual cycle reflects the activity of the hypothalamus-pituitary-ovary system, which is manifested by structural and functional changes in the reproductive tract: uterus, fallopian tubes, endometrium, and vagina. Each cycle ends with menstrual bleeding, the first day of which is considered the beginning of the cycle.

Placental lactogen in the blood

Placental lactogen or placental somatomamotropin is a glycoprotein with a molecular mass of approximately 19,000. It is synthesized by syncytiotrophoblast from the early stages of pregnancy, while its content in the blood during physiologic pregnancy increases.

A pregnancy-associated protein A in the blood (PAPP-A)

A pregnancy-associated plasma protein A (PAPP-A) was detected in the serum of pregnant women in 1974. The protein has a molecular weight of 820,000, a tetrameric structure, a developed carbohydrate component, and a pronounced affinity for heparin.

Unbound (free) estriol in the blood

Estriol is the main estrogen synthesized by the placenta during pregnancy. Unbound estriol passes through the placenta and enters the bloodstream of the pregnant woman, where it quickly turns into glucuronide and sulfate derivatives, which facilitates the process of its excretion.

Beta-chorionic gonadotropin in the blood and urine

Beta-chorionic gonadotropin is a glycoprotein secreted by the syncytial layer of trophoblast during pregnancy. It supports the activity and existence of the yellow body, stimulates the development of the embryoblast. Excreted in the urine.

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