Normal Testosterone Levels

What you may consider normal testosterone levels for one person, may be differant for another.

As you age, your testosterone requirements may change over time.

When you were younger (teens) your testosterone was at it's highest, and as you age it has gradually declined.

Your testosterone levels influence your behaviour just as much as your health.

When you were a sexually fueled, wide eyed, ambitious 20 year old it was mostly because of your high testosterone levels.

Normal Testosterone Levels by Age in Healthy Men

Vermeulen, A. (1996). Declining androgens with age: an overview. In Vermeulen, A. & Oddens, & B. J. (Eds.), Androgens and the Aging Male (pp. 3-14). New York: Parthenon Publishing.
Measurements in European Units (nmol/L)

Age	Number of Subjects	Total Testosterone	Standard Deviation	Free Testosterone	Standard Deviation	SHBG	Standard Deviation
25-34	45	21.38	5.90	0.428	0.098	35.5	8.8
35-44	22	23.14	7.36	0.356	0.043	40.1	7.9
45-54	23	21.02	7.37	0.314	0.075	44.6	8.2
55-64	43	19.49	6.75	0.288	0.073	45.5	8.8
65-74	47	18.15	6.83	0.239	0.078	48.7	14.2
75-84	48	16.32	5.85	0.207	0.081	51.0	22.7
85-100	21	13.05	4.63	0.186	0.080	65.9	22.8

Measurements Converted to (ng/dl)

Age	Number of Subjects	Total Testosterone	Standard Deviation	Free Testosterone	Standard Deviation	SHBG (nmol/L)	Standard Deviation
25-34	45	617	170	12.3	2.8	35.5	8.8
35-44	22	668	212	10.3	1.2	40.1	7.9
45-54	23	606	213	9.1	2.2	44.6	8.2
55-64	43	562	195	8.3	2.1	45.5	8.8
65-74	47	524	197	6.9	2.3	48.7	14.2
75-84	48	471	169	6.0	2.3	51.0	22.7
85-100	21	376	134	5.4	2.3	65.9	22.8

Normal Testosterone Levels in Healthy Non-Diabetic Men

Simon, D., Nahoul, K., & Charles M.A. (1996). Sex hormones, aging, ethnicity and insulin sensivity in men: an overview of the TELECOM Study. In Vermeulen, A. & Oddens, & B. J. (Eds.), Androgens and the Aging Male (pp. 85-102). New York: Parthenon Publishing.
Measurements in European Units (nmol/L)

Age	Number of Subjects	Mean Total Testosterone	Standard Deviation	Median Total Testosterone	5th Percentile	10th Percentile	95th Percentile
25	125	23.97	5.48	24.15	14.15	16.22	33.12
<25-29	354	23.18	7.14	22.08	13.46	15.18	34.84
30-34	330	21.53	6.72	20.70	12.07	13.46	33.81
35-39	212	20.70	6.55	19.66	11.39	13.46	32.77
40-44	148	20.7	6.87	20.70	11.04	13.11	32.43
45-49	154	18.91	5.66	18.28	11.39	12.42	29.32
50-54	164	18.87	6.49	17.94	10.01	12.07	32.43
55-59	155	19.14	6.04	18.97	11.04	11.73	30.01

Measurements Converted to (ng/dl)

Age	Number of Subjects	Mean Total Testosterone	Standard Deviation	Median Total Testosterone	5th Percentile	10th Percentile	95th Percentile
<25	125	692	158	697	408	468	956
25-29	354	669	206	637	388	438	1005
30-34	330	621	194	597	348	388	975
35-39	212	597	189	567	329	388	945
40-44	148	597	198	597	319	378	936
45-49	154	546	163	527	329	358	846
50-54	164	544	187	518	289	348	936
55-59	155	552	174	547	319	338	866

Depending on the lab ranges your doctor uses, the typical male testosterone level is between 250ng/dl to 850 ng/dl.

As you can imagine these ranges are not set for a virile, high quality of life. They are a cross section of men aged 20 to 100. Many of them are sick and not healthy.

So when you get you get your blood work back and your doctor says your testosterone levels are "normal" at 275 ng/dl, you can tell him where to go. Politely of course. :)

Your doctor may say you are not a candidate for testosterone replacement due to these "normal levels".

If you kindly talk about the reference ranges and remind him you have the testosterone levels of a sick 90 year old, maybe he/she will come around.

Even then... you may be better off talking about your symptoms of low testosterone like fatigue, loss of sex drive, foggy headedness, etc... Tell him your job is suffering and you may get fired, or your wife/girlfriend is about to leave you due to libido or money problems.

Doctors will usually come around once you explain the seriousness of your case. And if they don't come around? Shop around. You'll eventually find a doctor that suits your needs. It's not worth it in the short or long term to ignore your low testosterone levels.

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