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Alpha-Aminobutyric Acid — Concentration

Published: August 9, 2026Updated: August 16, 2026

This test measures the amount of alpha-aminobutyric acid, an amino acid, in a laboratory specimen.

Quick summary

["The result is best interpreted with the rest of your amino acid profile and your health history."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
26819-3
Short code
A-Aminobutyr Amn-sCnc
Synonyms
A-Aminobutyr Amn-sCnc
Category
liver
Sample
fluid
Container
Sterile tube
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Specimen volume
2-5 mL
Stability
Room temperature: 2h, Refrigerated: 24h
Hemolysis max
300
TAT
4–24 hours
Order
routine

What is this test?

This test measures alpha-aminobutyric acid, a type of amino acid found in the body. Amino acids are building blocks used to make proteins and other important molecules.

Why might I need this test?

It may be ordered as part of an amino acid profile when a clinician is evaluating nutrition, metabolism, or symptoms that may involve abnormal protein breakdown. It is usually interpreted together with other amino acid results rather than by itself.

How is the test performed?

A laboratory uses a validated quantitative method to measure alpha-aminobutyric acid in the submitted specimen. The result is compared with the laboratory's reference range and may also be considered alongside related amino acid measurements.

How do I prepare for the test?

Follow any instructions from the ordering clinician or laboratory. Some amino acid tests require fasting or temporary changes in diet or medicines, but preparation can vary, so ask the laboratory if you are unsure.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Higher or lower alpha-aminobutyric acid levels can occur with nutritional, metabolic, liver, or kidney-related conditions and may also be affected by illness or medication. An isolated abnormal result does not establish a diagnosis. Your clinician will interpret it with the rest of the amino acid profile, symptoms, examination findings, and other tests.

Short name

Alpha-aminobutyric acid

Frequently asked questions

What does alpha-aminobutyric acid measure?
It measures the concentration of a specific amino acid in a laboratory specimen. Amino acids are the building blocks your body uses to make proteins and other compounds.
Is one abnormal result a diagnosis?
No. Alpha-aminobutyric acid is often evaluated as part of a broader amino acid profile, so trends and related results are more useful than a single value.
Do I need to fast before this test?
It depends on the laboratory's instructions. Some amino acid testing may require fasting, so follow the preparation provided by the ordering clinician or laboratory.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

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.

Medical Disclaimer

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