How much free testosterone should a man have pg mL?
Free testosterone levels are measured by picogram/milliliter. Normal free testosterone levels vary from a range of 9.3-26.5 pg/mL for men aged 20-29, to 6.6-18.1 pg/mL for men 59 and older. For middle-aged men (between the ages of 40-49) the normal range is 6.8-21.5 pg/mL.
What is the normal range of free testosterone?
The normal range in most laboratories is 300 to 800 ng/dL. Total T should be the first test ordered in the workup for hypogonadism. Free T is most useful when there is a reason to suspect that the sex hormone- binding globulin level is abnormally decreased, leading to potentially falsely low total T readings.
What is the calculation for free testosterone?
Therefore, in routine clinical practice, free testosterone can be calculated assuming an albumin concentration of 43 g/L (6.2 x 10-4 mol/L), only requiring input of measured values for total testosterone and SHBG.
What is a low level of free testosterone?
Generally, most experts would agree that a total testosterone level less than 250 ng/dL is considered low, whereas some experts endorse a higher level of around 350 ng/dL as the lower limit of normal.
Is it bad to have high free testosterone?
High testosterone in men can lead to a decrease in sperm count, decreased testicle size, acne, and changes in sexual performance. While higher testosterone levels can be genetic, there other possible causes, as well—including anabolic steroid abuse and certain rare kinds of adrenal tumors.
Which is more important free testosterone or total testosterone?
According to some research, free T levels are a better predictor of testosterone deficiency symptoms than levels of total T are. What’s more, low levels of total T don’t necessarily point to a testosterone-related health issue, since this might be simply a “side effect” of something else going on in your body.
What is considered low free testosterone?
The American Urology Association (AUA) identifies low blood testosterone (Low-T) as less than 300 nanograms per deciliter (ng/dL). These symptoms or conditions may accompany Low-T: Low sex drive. Fatigue.
What is more important free testosterone or total?
What if my free testosterone is low?
You can have an average total testosterone concentration but still have low free testosterone levels; this can lead to symptoms like erectile dysfunction, low sex drive, obesity, loss of hair, loss of bone or muscle mass, and mood changes.
Is 600 a good testosterone level?
A normal male testosterone level peaks at about age 20, and then it slowly declines. Testosterone levels above or below the normal range are considered by many to be out of balance. Moreover, some researchers suggest that the healthiest men have testosterone levels between 400-600 ng/dL.
What is the best free testosterone level?
The normal testosterone levels in males is 260 -1080 ng/dl and the free testosterone is 47-244 pg/ml. While the total testosterone level is fine, the free testosterone level is reduced.
What is low free testosterone?
Low testosterone, or low T, is diagnosed when levels fall below 300 nanograms per deciliter (ng/dL). A normal range is typically 300–1000 ng/dL, according to the U.S. Food and Drug Administration.
What is free testosterone levels?
Free testosterone is a term that refers to the amount of testosterone in the bloodstream, usually tested in males with certain medical conditions. According to the American Association for Clinical Chemistry (AACC), free testosterone only accounts for 1-4 percent of the testosterone in a typical male’s bloodstream.
What is the best blood test for testosterone levels?
A testosterone level test measures the amount of testosterone in the blood and is reported as nanograms per deciliter (ng/dL). It’s also known as a serum testosterone test. Testosterone is an androgen, or a sex hormone, produced by both males and females. It plays a role in puberty and fertility.