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Testosterone is a sex hormone that is responsible for aiding in the development of the male sexual characteristics. Females also have minute concentrations of the hormone, but it is mostly found in males and is considere... More »

www.reference.com Science Human Anatomy Glands & Hormones

According to WebMD, testosterone is produced primarily by the testes, the main male organs of reproduction, though it is also produced in small amounts by women's ovaries. Testosterone production in the testes is conditi... More »

www.reference.com Science Human Anatomy Glands & Hormones

Normal blood levels of testosterone vary between 300 and 1,000 to 1,200 nanograms per deciliter, according to WebMD. Testosterone is a sexual hormone responsible for the development of male sexual traits after puberty. M... More »

www.reference.com Health Medical Ranges & Levels
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According to Harvard Medical School, males use hormone replacement therapy in order to treat very low levels of testosterone, which has been linked to low mood, fatigue and diminished muscle mass. Harvard notes that some... More »

www.reference.com Science Human Anatomy Glands & Hormones

The testes produce both sperm and the androgenic hormone testosterone, which is a vital hormone for male development, driving the changes that take place during puberty. However, testosterone isn't the only hormone that ... More »

www.reference.com Science Human Anatomy Glands & Hormones

Testosterone is the primary male sex hormone, and its main function is to control male physical features. This hormone is created in the testes, and testosterone helps transform a boy into a man. Testosterone deepens the... More »

www.reference.com Science Human Anatomy Glands & Hormones

Testosterone injections are administered by injecting the sex hormone into muscle tissue, typically in the major muscles of the thigh, hip, upper arm or buttocks, according to Drugs.com. The injections are used in males ... More »

www.reference.com Science Human Anatomy Glands & Hormones