Jane Says: Consider Where Your Eggs Are From, Not Their Color. A yolk is a yolk is a yolk is a yolk, regardless of its hue. Feed mixed with marigolds or paprika lends its tone to henâs eggs. (Photo: Mike Harrington/Getty Images)
The normal range of testosterone levels in healthy adult males is between 280 to 1,100 nanograms per deciliter (ng/dL), reports the University of Rochester Medical Center. Itâs important to determine if a low testosterone level is due to normal aging or if itâs due to a disorder.
So, when you see research on normal testosterone levels, it usually focuses on total testosterone. Consequently, most of the numbers in this post will be about total T levels. With that said, I do include some references to research that indicates what average and optimal free testosterone levels are.ccording to this chart, my beginning T level (383 ng/dl) was near the bottom 5% and 10% across all age groups. Even for 55-59-year-old men. (Boo!). My testosterone level after 90 days of good living (778 ng/dl), was above average for my age group (Bully!).