The main calming neurotransmitter, also measured as an amino acid.
Gamma-aminobutyric acid, usually called GABA, is the main calming signal in the nervous system. It is made from glutamic acid and helps balance the excitatory signals in the brain. As an amino acid it can also be measured in blood.
It is measured as part of a plasma amino acid profile. Blood GABA does not directly reflect brain activity, so it is read for context within the wider panel rather than as a test of mood or anxiety. Plasma levels are normally very low.
Aniva reads your result against research-backed ranges, not just the lab's wide normal. The reference shown below is specific to this biomarker.
| Group | Adult fasting plasma range |
|---|---|
| Adults | 0 to 5 µmol/L |
Plasma GABA is normally very low. Amino acid ranges vary by laboratory and method, and are best read as part of the full plasma amino acid profile.
Recent protein intake, supplements, fasting state, and time of day affect the result. Blood GABA does not reflect brain levels. A fasting morning sample gives the most reliable reading.
Read as part of the full plasma amino acid profile.
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