Biomarker Reference · HPA-G Index
HPA-G Composite Index (HPA-G Index) is a clinical biomarker used in neurological-mental-health assessment. The HPA-G index is a proprietary weighted composite derived from the pattern of inhibitory (serotonin, GABA), excitatory (dopamine, norepinephrine, epinephrine, glutamate), and adrenal (cortisol) markers. It is measured in 1 laboratory test on BiomarkersLabs.com.
The HPA-G index is a proprietary weighted composite derived from the pattern of inhibitory (serotonin, GABA), excitatory (dopamine, norepinephrine, epinephrine, glutamate), and adrenal (cortisol) markers. It aims to summarise overall neuroendocrine balance and resilience in a single metric.
The index is used by practitioners to guide personalised nutritional and lifestyle interventions within a functional-medicine framework. It is not a diagnostic score and has not been validated against clinical outcomes in peer-reviewed studies.
Reference ranges vary by laboratory and assay platform. Interpret in context of the issuing laboratory's stated range.
1 test on BiomarkersLabs.com include this biomarker.
Available exclusively to verified licensed healthcare practitioners. CLIA-certified laboratory results delivered to your secure portal.
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