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Functional Serum Concentration

Meaning

Functional Serum Concentration refers to the specific level of a hormone, nutrient, or metabolite in the bloodstream that is required to achieve and sustain optimal biological activity at the cellular and tissue level. This concentration often falls within a narrower, more advantageous range than the broad reference intervals typically provided by standard laboratories, which are based on a general population’s mean. The functional level is the target concentration utilized in precision medicine to ensure maximum physiological benefit and is essential for effective hormonal health management.