Free Testosterone
Free testosterone is a term that refers to the amount of testosterone in
the bloodstream, usually tested in males with certain medical
conditions. According to the American Association for Clinical Chemistry
(AACC),
free testosterone only accounts for 1-4 percent of the
testosterone in a typical male's bloodstream. Testosterone is the major
androgenic hormone made by the testes in males. Its production is
stimulated and controlled by luteinizing hormone (LH), which is
manufactured in the pituitary gland. In males, testosterone stimulates
development of secondary sex characteristics, including enlargement of
the penis, growth of body hair and muscle, and a deepening voice. It is
present in large amounts in males during puberty and in adult males to
regulate the sex drive and maintain muscle mass. Testosterone is also
produced by the adrenal glands in both males and females and, in small
amounts, by the ovaries in females. In women, testosterone is converted
to estradiol, the main sex hormone in females.
Product Specifications:
- Product code: GDB715325
- Calibrators: 0, 0.2, 1, 2.1, 5.6, 13.8, 37.5 pg/ml (Lot Specific)
- Sample: 20 µl
- Sensitivity: 0.05 pg/ml
- Total Time: 75 Minutes
- Shelf Life: 18 Months