The Boys' Growing Up in the Lord

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Question

Is it normal for a 14 year old male, who started puberty at 12, to have adult levels of testosterone? My results were about 784.63 ng/DL, which I thought were quite high for someone my age considering the fact that I have a faint mustache and small amounts of body hair.


Answer

Here is a chart of typical testosterone levels in boys:

0 to 5 months 75-400 ng/dl
6 months to 9 years Less than 7-20 ng/dl
10 to 11 years Less than 7-130 ng/dl
12 to 13 years Less than 7-800 ng/dl
14 years Less than 7-1,200 ng/dl
15 to 16 years 100-1,200 ng/dl
17 to 18 years 300-1,200 ng/dl
19 years and older 240-950 ng/dl

[Source: Claire Sissons, "Typical testosterone levels in males and females," Medical News Today, 17 September 2018.]

The broad ranges are because boys enter puberty at different ages. But what I want you to notice is that during adolescence your testosterone levels are often higher than your adult levels.