GABA (Gamma-Aminobutyric Acid) in Serum/Plasma

What Does This Test Measure?

GABA (Gamma-Aminobutyric Acid) is a neurotransmitter that plays a key role in reducing brain activity. Your body produces it naturally, and small amounts can be found in your blood. This test helps assess its concentration, which may be relevant in certain neurological or psychiatric evaluations.

Why Might You Need This Test?

A GABA test may be ordered if you have symptoms like seizures, anxiety, or sleep disorders. Doctors might also check it in people with epilepsy, autism spectrum disorder, or other neurological conditions where GABA levels could be important.

Sample Collection and Preparation

A blood sample is taken from a vein in your arm. You may feel a small pinch when the needle is inserted, but the process is quick. The sample is then sent to a lab for analysis. No special preparation is needed, but avoid eating or drinking for a few hours before the test if instructed.

What Are Possible Results?

Results are typically reported as a concentration level of GABA in the blood. While reference ranges can vary by lab, they generally reflect normal physiological levels. Abnormal results may suggest conditions affecting GABA production or function.