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Alpha-Aminobutyric Acid — Mass Concentration

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

A quantitative amino acid test that measures the amount of alpha-aminobutyric acid in the tested specimen.

Quick summary

["This test measures alpha-aminobutyric acid and is usually interpreted alongside the rest of an amino acid profile."]

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

Key facts at a glance

LOINC
13383-5
Short code
A-Aminobutyr Amn-mCnc
Synonyms
A-Aminobutyr Amn-mCnc
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?

Alpha-aminobutyric acid is a nonessential amino acid. This test measures its mass concentration and is generally used as part of a broader amino acid evaluation.

Why might I need this test?

Your clinician may order it to evaluate amino acid metabolism, particularly when symptoms or other laboratory findings suggest an inherited metabolic disorder, nutritional concern, or another condition that may affect amino acid levels.

How is the test performed?

A laboratory measures alpha-aminobutyric acid in the specimen specified by your clinician, commonly as part of quantitative amino acid analysis. The exact specimen type and testing method can vary, so confirm these details with the laboratory.

How do I prepare for the test?

Follow the preparation instructions provided for this specific test. Amino acid testing may require fasting, and diet, supplements, and illness can affect results; do not stop medicines or change your diet unless your clinician instructs you to do so.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

An elevated alpha-aminobutyric acid result may occur with certain disorders of amino acid metabolism, liver function, kidney function, or nutritional and metabolic stress. An isolated elevation is not diagnostic and should be interpreted with the other amino acids, symptoms, and the rest of your laboratory results.

Short name

Alpha-Aminobutyric Acid

Frequently asked questions

Is alpha-aminobutyric acid the same as an amino acid profile?
It is one amino acid measured within a quantitative amino acid profile. The profile provides more context than this result by showing several amino acids at the same time.
What does a high result mean?
A high result can reflect an amino acid metabolism disorder or another metabolic, liver, or kidney condition. It may also be temporary, so your clinician will interpret it alongside your medical history and other tests.
Do I need to fast before this test?
Fasting may be required for some amino acid tests, but the instructions depend on the specimen and laboratory method. Ask the ordering clinician or laboratory before your appointment if you are unsure.
  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