Testosterone Levels by Age Chart: What is Normal?

Testosterone therapy: Potential benefits and risks as you age

Testosterone levels are determined through a blood test, as testosterone uses the blood stream to travel around your body. The amount of testosterone in your blood is measured in several different ways. A comprehensive video call will then be set up with a board-certified clinician who can explain your hormone levels and recommend a personalized treatment plan. Your clinician will also be able to give you an idea of when you will start seeing results on TRT—and warn you of any potential side effects. T levels in men can vary widely, though they generally decline in men after the age of 35, says McDevitt. « But it’s hard to say where ‘average’ is for your age, since it can depend on so many criteria, » says McDevitt.

Regular follow-ups ensure the treatment’s effectiveness and safety. TRT Therapy can be done via a telehealth call if you do bloodwork at your local lab. An urologist can review your bloodwork and take your case history via secure video chat to prescribe a testosterone replacement therapy treatment program for you. You will need to follow up 2-3 months afterwards and have your testosterone levels checked to ensure you are on the correct dosage and TRT delivery method. Our experienced team can help determine whether a testosterone blood test is appropriate for you and guide you through the next steps.

Most doctors agree that a « normal » reading falls anywhere between 300 to 1,000 nanograms per deciliter (ng/dL). About 40% of men over age 45 will have levels that come in below that range. The pharmacokinetics of short-acting testosterone therapy depends on the dose, interval, and method of delivery (SQ versus IM). The half-life for IM testosterone was also shorter at 173 hours versus 240 hours for SQ testosterone. Mean testosterone values over a 7-day time period were 1,659, 896, and 422 ng/dL for IM testosterone SQ 100, and SQ 50, respectively. Patients on short-acting IM or short-acting SQ pellets (testosterone cypionate or enanthate) should have their testosterone measured after several cycles such that testosterone level equilibration has been achieved.

Used for longer periods of time (ie, 1 year), DHEA has produced some increases on sexual function. Hypogonadism in men is a syndrome characterized by a set of symptoms of women with too much testosterone (golfindustria.es) and signs of androgen deficiency that occur in association with consistently low circulating testosterone levels (3). The reference ranges provide the basis for differentiating low from normal testosterone levels, and are, therefore, essential for making the diagnosis of hypogonadism. We have published reference ranges for circulating testosterone levels generated in healthy nonobese men who were participants in the Framingham Heart Study (FHS) (4); similar data have been published in other populations (5–11). However, an important unresolved question is whether the reference ranges generated in one population of men can be applied more broadly to men in other geographic regions and in other populations. The distribution of testosterone concentrations could vary in men from different regions due to interassay or interlaboratory differences, or biological or environmental factors.

In regard to therapies for women with low T levels, there is very limited research on the topic. There are currently no Food and Drug Administration (FDA)-approved testosterone medical treatments for women. Yet, more than 30 FDA-approved therapies exist for men in the United States. Menopause, which occurs as a woman ages, can lead to a lower amount of testosterone produced by the ovaries. Menopause is often the reason why women experience a change in their sex drive. Clinically, if you’re doing well and your doctor agrees that your levels are within good ranges, then you’ll want to test every six months.

Among these, 95 were excluded because of androgen or antiandrogen use, or orchiectomy, resulting in an analytical sample of 1488 participants. Reference ranges for testosterone are essential for making a diagnosis of hypogonadism in men. Erectile dysfunction (ED) and low testosterone are interrelated conditions that affect millions of men worldwide, often causing significant impacts on their quality of life and relationships.

If you wonder whether testosterone therapy might be right for you, talk with your doctor about the risks and benefits. Your doctor will likely measure your testosterone levels at least twice before recommending testosterone therapy. Testosterone levels generally peak during adolescence and early adulthood. As you age, your testosterone level gradually declines — typically about 1% a year after age 30 or 40. For older men, it’s important to determine if a low testosterone level is due to normal aging or if it is due to a disease (hypogonadism).

These distinctions, of course, are far from absolute, and it is far from clear if they depend on biology or culture, nature or nurture. Still, new research suggests that testosterone may play an important role in cognitive function. Some things that cause low testosterone can also cause a low sperm count.