Understanding This Test: What It Is, Why You May Need It, and How It Is Done
This urine test measures levels of three amino acid compounds—beta-alanine, beta-aminoisobutyrate, and gamma-aminobutyrate (GABA)—to help evaluate metabolic and neurological conditions.
{"Measures three compounds: beta-alanine, beta-aminoisobutyrate (BAIB), and gamma-aminobutyrate (GABA) in urine","Helps diagnose metabolic disorders affecting amino acid processing","May aid in evaluating neurological conditions related to GABA levels","BAIB levels can indicate certain genetic variations affecting metabolism","Results help healthcare providers understand how your body processes these amino acids","Note: Although listed as serum, this specific panel tests urine samples"}
Key facts at a glance
- LOINC
- 79584-9
- Short code
- BABAGABA
- Synonyms
- B-Alanine + B-AIB + GABA Pnl Ur
- Category
- chemistry
- Sample
- serum
- Container
- Sterile, leak-proof urine collection container without preservatives; 24-hour collection requires container with toluene or thymol preservative if not refrigerated.
- Units
- N/A
- Ref low
- 200
- Ref high
- 1000
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 0–120 years
- Method
- Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS) or Ion Exchange Chromatography with ninhydrin detection
- CPT
- 82139
- SNOMED
- 444150007
- Specimen volume
- 10-20 mL of random urine or complete 24-hour urine collection (record total volume)
- Stability
- Ambient: 2 hours; Refrigerated (2-8°C): 24 hours; Frozen (-20°C or below): 30 days. Samples should be frozen if not analyzed within 24 hours.
- Hemolysis max
- 500
- Lipemia max
- 1000
- Icterus max
- 500
- TAT
- 48–168 hours
- Order
- routine
This test is a diagnostic procedure that gives your healthcare provider important information about your health. Depending on your situation, it may measure specific substances in your body, check how well an organ is working, or help identify a medical condition that could benefit from treatment or further evaluation.
The Beta Alanine, Beta Aminoisobutyrate, and Gamma Aminobutyrate Panel is a urine test that measures the levels of three important compounds in your body. Beta-alanine is an amino acid that helps build carnosine, a substance in muscles. Beta-aminoisobutyrate (BAIB) is a byproduct of normal body processes and its levels can vary based on genetic factors. Gamma-aminobutyrate (GABA) is a neurotransmitter—the body's chemical messenger—that helps regulate nerve cell activity in the brain. This panel helps doctors understand how your body produces and processes these substances.
Your doctor may recommend this test to help find the cause of symptoms you are experiencing, to screen for a condition before it leads to problems, to monitor a condition you already have, or to check how well your current treatment plan is working over time.
Your healthcare provider may order this test if they suspect a metabolic disorder affecting how your body processes certain amino acids. It may also be used to evaluate conditions related to GABA levels, such as certain neurological or movement disorders. The test can also help identify genetic variations that affect BAIB levels. Additionally, this test may be used to monitor certain conditions or evaluate the effectiveness of specific treatments.
The test is performed by a trained member of your care team, usually in a laboratory, clinic, or hospital setting. Depending on the type of test, it may involve giving a small sample of blood, urine, or other tissue, or using painless imaging equipment, and most people can return to their normal activities right away.
This test requires a urine sample. You will be given a sterile container to collect a sample of your urine, typically first-morning urine provides the most accurate results. The sample is then sent to a laboratory where specialized equipment measures the levels of beta-alanine, beta-aminoisobutyrate, and GABA. Before the test, follow any specific instructions from your healthcare provider, which may include avoiding certain foods or medications that could affect the results.
Reference range
Beta-alanine: <50 μmol/g creatinine; Beta-aminoisobutyrate: <150 μmol/g creatinine (varies with phenotype, high excretors may show 200-1000 μmol/g creatinine); Gamma-aminobutyrate (GABA): <15 μmol/g creatinine. Reference ranges are method- and age-dependent; pediatric ranges differ.N/A
No special preparation required. Patients should maintain usual diet and hydration prior to specimen collection. Avoid excessive fluid intake immediately before collection to prevent dilution of urinary analytes.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
This test has several clinical applications. Elevated or reduced levels of beta-alanine may indicate metabolic disorders affecting amino acid processing. Beta-aminoisobutyrate levels are influenced by genetic variations in the ABAT gene, and abnormal levels may help identify individuals with certain metabolic conditions. GABA measurement is important for evaluating neurological conditions, as GABA is the brain's primary inhibitory neurotransmitter—abnormal levels may be associated with seizures, anxiety disorders, movement disorders, or other neurological conditions. This panel helps healthcare providers diagnose these conditions, monitor disease progression, or evaluate treatment responses.
Frequently asked questions
Is fasting required before this test?
Are there any risks associated with this urine test?
How long does it take to get results?
What do abnormal results mean?
Can medications affect the test results?
Sources
- 1
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- 3
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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