Understanding the Difference: Free vs. Total Testosterone Levels

Testosterone, a crucial hormone in the human body, particularly in males, exists in two forms: free testosterone and total testosterone. Total testosterone refers to the overall level of testosterone in the bloodstream, including bound and free testosterone. Free testosterone, comprising a small fraction of the total, is not attached to proteins and is biologically active. Assessing both forms offers insights into androgen deficiency, guiding diagnosis and treatment.

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