Disclaimer: This content is for informational purposes only and does not constitute medical advice. Consult a qualified healthcare provider before starting any treatment.
Written by the Medical Team at Men’s Wellness Centers
You got your blood work back. There’s a number. Now what? A testosterone result without context is hard to interpret.
Here’s what testosterone levels actually mean by age, and why the number alone doesn’t tell you much.
What Is Total Testosterone?
Most labs report total testosterone — all the testosterone in your bloodstream, bound to proteins and free. Reference ranges vary by lab, but most adult male ranges fall between 300 and 1,000 ng/dL.
Below 300 ng/dL is generally considered low. But the right range for any given person depends on age, symptoms, and overall health.
Normal Ranges by Age Group
The Baltimore Longitudinal Study of Aging followed men across decades and documented consistent testosterone decline with age. General typical ranges:
- Ages 20-29: 600-900 ng/dL typical range
- Ages 30-39: 500-800 ng/dL typical range
- Ages 40-49: 400-700 ng/dL typical range
- Ages 50-59: 350-650 ng/dL typical range
- Ages 60+: 300-550 ng/dL typical range
These are approximations. Lab reference ranges vary. The point: decline is normal, but decline that causes symptoms is something worth addressing rather than just accepting.
Free vs. Total Testosterone
Total testosterone includes the portion bound to sex hormone-binding globulin (SHBG) and albumin. Free testosterone is the biologically active portion — unbound, able to enter cells.
Some men have normal total testosterone but low free testosterone because SHBG is high. They can have symptoms of deficiency despite a normal total number. That’s why full testing includes free T and SHBG, not just the top-line total.
What “Low” Really Means
The Endocrine Society defines hypogonadism as a total testosterone below 300 ng/dL plus symptoms. Both conditions have to be present. A low number without symptoms, or symptoms without a low number, doesn’t automatically mean treatment is warranted.
A man at 295 ng/dL who feels fine is in a completely different situation than a man at 310 who’s exhausted, has no libido, and feels like a different person. The number is one data point.
Visit our low testosterone page for more on what a clinical evaluation includes.
Why Your Number Matters Less Than Your Symptoms
Two men with identical testosterone numbers can feel completely different. Individual sensitivity to testosterone varies significantly. Treatment decisions at Men’s Wellness Centers are based on labs and symptoms together, not the number alone.
If your number is technically in range but something feels off, that’s a conversation worth having with a physician who knows men’s hormonal health.
Getting Tested
At Men’s Wellness Centers, testing is done in-clinic with same-day results. We run total and free testosterone, SHBG, and often LH, FSH, and a metabolic panel. Your physician reviews the results with you in person.
If levels are low and symptoms fit, we walk through what testosterone replacement therapy involves, how monitoring works, and what to expect.
Medical References
- Harman SM, et al. “Longitudinal effects of aging on serum total and free testosterone levels in healthy men.” Journal of Clinical Endocrinology & Metabolism. 2001. PubMed: 11178927
- Bhasin S, et al. “Testosterone Therapy in Men with Androgen Deficiency Syndromes: An Endocrine Society Clinical Practice Guideline.” JCEM. 2010. PubMed: 20525905
Disclaimer: This content is for informational purposes only and does not constitute medical advice. Consult a qualified healthcare provider before starting any treatment.