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Testosterone levels in males and females ; Total testosterone Stage Age range Male Female Values SI units Values SI units ; Infant: Premature (26–28 weeks) 59–125 ng/dL: 2.047–4.337 nmol/L
Mini-puberty is a transient hormonal activation of the hypothalamic-pituitary-gonadal (HPG) axis that occurs in infants shortly after birth. This period is characterized by a surge in the secretion of gonadotropins (LH and FSH) and sex steroids (testosterone in males and estradiol in females), similar to but less intense than the hormonal changes that occur in puberty during adolescence.
Testosterone levels peak in the teen years. When men are in their mid-30s, testosterone levels begin to decline. A healthy testosterone level depends on your age, genetics, and lifestyle.
Though women also produce testosterone, men produce 20 to 25 times more in comparison, and about 95 percent of it is made in the testicles. But the testes don’t work alone — they rely on ...
In males, the monitoring of treatment normally requires the measurement of serum testosterone, inhibin B, haematocrit and prostate-specific antigen (PSA). If injections are used, trough levels are taken to ensure an adequate level of testosterone is achieved throughout the injection cycle. [4]
Dips in testosterone can cause low libido, brain fog, depression, and muscle loss, but it's pivotal you know your normal range, a doctor says.
"Providers are encouraged to consult with their local lab(s) to obtain hormone level reference ranges for both 'male' and 'female' norms, [which can vary,] and then apply the correct range when interpreting results based on the current hormonal sex, rather than the sex of registration."
Men with low serum testosterone levels should have other hormones checked, particularly luteinizing hormone to help determine why their testosterone levels are low and help choose the most appropriate treatment (most notably, testosterone is usually not appropriate for secondary or tertiary forms of male hypogonadism, in which the LH levels are ...