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Substrate Availability Indexing

Meaning

Substrate Availability Indexing is a diagnostic and clinical process that systematically measures and evaluates the in-vivo concentrations of key biochemical precursors, co-factors, and essential raw materials required for optimal hormonal synthesis and metabolic function. This indexing moves beyond measuring final hormone products to assess the foundational capacity of the body’s production pathways. It is crucial for identifying upstream bottlenecks in steroidogenesis and neurotransmitter synthesis.