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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
What Are Considered Low Testosterone Levels? Clinically, hypogonadism—or low T—is defined by having two tests where testosterone levels are 200 ng/dL or less. "What I've noticed in my patients ...
Low testosterone levels can sometimes result in gynecomastia — a form of breast growth that affects men. Gynecomastia can cause your nipples to become swollen or tender. You might feel an ...
As men get older, declining testosterone levels are as inevitable as death and taxes. Around the age of 30, men's T levels start to dwindle by about 1 percent a year.
Testosterone, total Refs Endocrine Society: United States: 100–200 pg/mL <50 ng/dL [1] World Professional Association for Transgender Health (WPATH) United States "[T]estosterone levels [...] below the upper limit of the normal female range and estradiol levels within a premenopausal female range but well below supraphysiologic levels."
However, free testosterone is difficult and expensive to measure (it requires a time-consuming dialysis step), and many laboratories do not offer this service. The free androgen index is intended to give a guide to the free testosterone level, but it is not very accurate (especially in males — see endocrine society commentary below).
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