Depressed gonadotropin levels in men occur in azoospermia. The determination of FSH in conjunction with LH is utilized for the following indications: congenital diseases with chromosome aberrations, polycystic ovaries (PCO), amenorrhea (causes), and menopausal syndrome. To convert from SI units to conventional units, divide by the conversion factor. In men, FSH serves to induce spermatogonium development.ĭetermination of the FSH concentration is used in the elucidation of dysfunctions within the hypothalamus‑pituitary‑gonads system. To convert from a conventional unit to an SI Unit, multiply by the conversion factor (e.g. Due to changes in ovarian function and reduced estrogen secretion, high FSH concentrations occur during menopause. The FSH level shows a peak at mid - cycle, although this is less marked than with LH. The measurement units are categorized into types (such as Temperature Conversion, Weight Conversion and so on) seen on the right-hand side which then lead. In the ovaries FSH, together with LH, stimulates the growth and maturation of the follicle and hence also the biosynthesis of estrogens in the follicles. The levels of the circulating hormones are controlled by steroid hormones via negative feedback to the hypothalamus. In women, the gonadotropins act within the hypothalamus‑pituitary‑ovary regulating circuit to control the menstrual cycle.įSH and LH are released in pulses from the gonadotropic cells of the anterior pituitary. FDA may require laboratory data using conventional units for reviewing submissions and labeling. For your convenience, we have included a guide for interconversion of. Quest Diagnostics is moving to SI units but continues to use selected conventional units during what has become a prolonged transition period. Conventional Standard Units (abbreviated as Conventional, used in the United States). With regard to laboratory reports, we remain in a transition state between conventional (gravimetric) units and SI units. Like LH, TSH and hCG, FSH is a glycoprotein consisting of two subunits (α - and β‑chains). Note: The conversion factors here correspond to two sets of units - International System of Units (abbreviated as SI, modern form of the metric system) and U.S. FSH and LH regulate and stimulate the growth and function of the gonads (ovaries and testes) synergistically. FSH (follicle stimulating hormone), together with LH (luteinizing hormone), belongs to the gonadotropin family. SI defines a number of SI prefixes to be used with the units: these combine with any unit name to give subdivisions and multiples.
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