GABA (Gamma-Aminobutyric Acid) in Saliva
This test measures the amount of GABA, a natural chemical in your saliva that helps regulate brain activity, often assessed for conditions affecting mood, anxiety, or neurological function.
["GABA levels may help identify imbalances linked to stress, anxiety, or certain neurological disorders."]
Key facts at a glance
- LOINC
- 94727-5
- Short code
- Gabapentin Sal Cfm-mCnc
- Synonyms
- Gabapentin Sal Cfm-mCnc
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- confirm
- Specimen volume
- 5 mL
- Stability
- Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
- Hemolysis max
- 500
- Lipemia max
- 1000
- Icterus max
- 500
- TAT
- 4–24 hours
- Order
- routine
Why This Test Might Be Ordered
Your healthcare provider may recommend this test if you have symptoms like chronic anxiety, insomnia, or mood swings that don’t improve with standard treatments. It could also be part of an evaluation for conditions like epilepsy, autism spectrum disorder, or other neurological concerns where GABA plays a role.
How the Test Works
A small sample of your saliva is collected and analyzed using a specialized laboratory technique to measure GABA levels. This test helps assess whether your natural GABA production is within expected ranges or if it may be contributing to your symptoms.
Sample Collection and Preparation
Saliva is collected in a clean container, usually by spitting into it. You may be asked to avoid eating, drinking (except water), or chewing gum for a few hours before the test to ensure accurate results. Follow your provider’s specific instructions for best results.
What to Expect Before the Test
There are no special preparations required beyond avoiding certain foods or beverages before collection. The process is quick and painless, often done in your provider’s office or at home with a kit.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
GABA is a key neurotransmitter that calms brain activity, helping to reduce anxiety and promote relaxation. Low levels may be associated with increased anxiety, sleep disturbances, or other neurological symptoms. High levels could indicate metabolic or genetic conditions affecting GABA metabolism. This test may help guide treatment options, such as supplements or lifestyle changes, but results should always be interpreted by a healthcare provider in the context of your overall health.
Short name
GABA Level
Frequently asked questions
What Does a Low or High GABA Level Mean?
Can This Test Be Used to Diagnose a Specific Condition?
How Long Does It Take to Get Results?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.
This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy