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2. What Is Low Testosterone & What Causes It? - AOL

   www.aol.com/low-testosterone-causes-125700734.html

   Low testosterone levels can sometimes result in gynecomastia — a form of breast growth that affects men. ... A free testosterone test. This test only measures your unbound testosterone, which is ...

3. What Free Testosterone Is, and Why it Matters - AOL

   www.aol.com/free-testosterone-why-matters...

   But when considering calculated free testosterone, luteinizing hormones, and sex hormone-binding globulin levels, up to 20.2 percent of men would qualify as having subsets of the condition, like ...

4. What are normal testosterone levels by age? - AOL

   www.aol.com/news/normal-testosterone-levels-age...

   The researchers also broke the data down into normal levels of free testosterone and bioavailable ... hypogonadism—or low T—is defined by having two tests where testosterone levels are 200 ng ...

5. Template:Testosterone levels in males and females - Wikipedia

   en.wikipedia.org/wiki/Template:Testosterone...

   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

6. Free androgen index - Wikipedia

   en.wikipedia.org/wiki/Free_androgen_index

   Free Androgen Index (FAI) is a ratio used to determine abnormal androgen status in humans. The ratio is the total testosterone level divided by the sex hormone binding globulin (SHBG) level, and then multiplying by a constant, usually 100. The concentrations of testosterone and SHBG are normally measured in nanomols per liter. FAI has no unit.

7. Hypogonadism - Wikipedia

   en.wikipedia.org/wiki/Hypogonadism

   In particular, research has questioned the validity of commonly administered assays of free testosterone by radioimmunoassay. [16] The free androgen index, essentially a calculation based on total testosterone and sex hormone-binding globulin levels, has been found to be the worst predictor of free testosterone levels and should not be used. [17]

8. Is a Testosterone Test Important? - AOL

   www.aol.com/testosterone-test-important...

   Skip the saliva tests—that only measures free testosterone, which comprises about 2 percent of your total T levels, explains andrology expert Charles Welliver, MD, associate professor of urology ...

9. Testosterone - Wikipedia

   en.wikipedia.org/wiki/Testosterone

   Testosterone levels play a major role in risk-taking during financial decisions. [93] [94] Higher testosterone levels in men reduce the risk of becoming or staying unemployed. [95] Research has also found that heightened levels of testosterone and cortisol are associated with an increased risk of impulsive and violent criminal behavior. [96]