Content Health Encyclopedia University of Rochester Medical Center

Testosterone Test: Free & SHBG, High vs Low vs. Normal Levels

You must be over 38, have had your ovaries removed or have suffered with premature menopause to warrant further hormone tests. You may have low testosterone depending on the symptoms you have, please contact us to find out how we can help. Feel free to ask us any question you would like about TRT, medical weightloss, ED, or other topics related to men’s health. When the needle pricks your arm or hand, you may feel a slight sting or pain. The pituitary gland in your brain controls the amount of testosterone your body makes.

It is important to remember that testosterone levels can fluctuate throughout the day and can also be influenced by various factors such as stress, sleep patterns, diet, exercise, and overall health. Therefore, a single blood test might not provide an accurate representation of an individual’s free testosterone levels. It is advisable to consult with a healthcare professional for a thorough evaluation if there are concerns about testosterone levels or related symptoms. Around 95% to 98% of the testosterone in your body is attached to either albumin or sex hormone-binding globulin (SHBG) proteins; thus, it is called bound testosterone. The rest of the 2% to 5% of the testosterone exists freely in the bloodstream, and it is known as free testosterone. In conclusion, testosterone, a hormone often shrouded in mystery and misconceptions, is a cornerstone of human health. Its influence extends far beyond the realms of physical development and reproductive health, touching on aspects of our mental and emotional well-being.

This test measures the amount of unattached, or “free,” testosterone in your blood. So if you just focus on your free testosterone numbers, you’re discounting the vast majority of the testosterone in your body. An increase in the Human Growth Hormone (HGH) concentration directly causes an increase in testosterone secretion [16]. Testosterone deficiency has been detected in 10% – 40% of adult males globally, with age being the most reliable indicator. Hone-affiliated medical practices are independently owned and operated by licensed physicians who provide services using the Hone telehealth platform. For more information about the relationship between Hone and the medical practices, click here.

Recognizing these causes is crucial in the diagnosis and treatment of low or high testosterone levels. It underscores the importance of a holistic approach to health, considering not just medical treatments but also lifestyle modifications to manage and maintain optimal testosterone levels. As we proceed to explore the symptoms and effects of testosterone imbalance, the interconnected nature of this hormone with various aspects of health becomes even more evident. The balance between free and total testosterone is crucial for several reasons. For example, a person can have normal total testosterone levels but still experience symptoms of testosterone deficiency if their free testosterone levels are low. This scenario can occur in cases where there is an increase in SHBG, which binds more testosterone, reducing the amount of free, active hormone. Low testosterone levels (hypogonadism) can have significant health implications.

Understanding the comprehensive role of testosterone is crucial in appreciating its significance and the implications of its imbalance. In the intricate dance of hormones within the human body, testosterone plays a leading role. However, its impact is not just about the total amount present; it’s also crucial to understand the difference between free testosterone and total testosterone. This distinction is key to comprehending how testosterone functions in the body and affects overall health. Understanding the role of testosterone is fundamental to comprehending various aspects of human health. Its influence stretches beyond mere physical characteristics, impacting emotional well-being, cognitive functions, and overall life quality. This guide aims to demystify the complexities surrounding free and total testosterone, providing readers with a comprehensive understanding of their impact on health and well-being.

However, it’s important to recognize that testosterone levels gradually decline with age as a natural part of the aging process. This decline can vary among individuals but generally becomes more pronounced as middle adulthood progresses. Moreover, high free testosterone levels in women can also cause acne, oily skin, and male-pattern hair loss (androgenic alopecia). These symptoms are a result of increased androgen activity in the skin and hair follicles. Women with high testosterone levels may also experience mood swings, irritability, and decreased libido. In addition to medical treatments, lifestyle changes may also be recommended to support healthy testosterone levels.

In conclusion, the normal range of free testosterone levels in men is between 9-30 ng/dL. This range indicates optimal hormone levels for maintaining muscle mass, bone density, energy levels, and reproductive health. Deviations from this range, either too low or too high, can indicate hormone imbalances or deficiencies that may require medical intervention and treatment. Regular monitoring and evaluation of testosterone levels, along with a comprehensive assessment of symptoms, can help ensure optimal health and well-being for men. This decline is normal but can sometimes lead to symptoms like decreased muscle mass, reduced energy levels, mood changes, and a lower sex drive. In women, testosterone levels are generally consistent but can be affected by factors like ovarian function and certain health conditions.

Testosterone is an important hormone found in both men and women, although it is typically present in higher concentrations in men. It plays a crucial role in cellular growth and repair, as well as in the development of secondary sexual characteristics. However, like any hormone, testosterone must be present in the body in appropriate levels to maintain optimal health.

It’s critical to test both free testosterone levels and total T, biotest supplements along with other biomarkers like SHBG and estrogen. For example, if your total T levels are normal, research finds that symptoms of low testosterone can still exist. Total Testosterone levels, and in turn, free testosterone levels (3), start to decrease around age 30 by about 1 percent every year.