Sex hormone binding globulin.

If you’re having significant symptoms of low testosterone including low libido, decreased energy and decreased concentration, it’s important to have a complete hormone panel done in order to identify all possible causes. This means looking beyond the amount of testosterone circulating in the bloodstream, to include your SHBG levels. The problem with the protein SHBG is once testosterone is bound to it, it becomes unavailable for cells to use. A complete panel can help identify this and help your doctor determine the proper level of total testosterone for you.

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