During the first few months, a male baby should product 75-400 ng/dL. That should change to 7-130 ng/dL.
A person should have 7-800 ng/dL between the ages of 12 and 13. However, by the age of 15 to 16, the ng/dL should be between 100 and 1,200.
Anyone between the ages of 17 and 18 should have testosterone levels ranging between 300 and 1,200 ng/dL.
Adults aged 19 and above should have testosterone levels ranging between 240 and 950 ng/dL.
Man on average produces 7mg of testosterone everyday