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Alpha-Aminobutyric Acid, Serum/Plasma

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

Measures alpha-aminobutyric acid in blood, usually as part of an amino acid panel used to evaluate metabolism and nutritional status.

Quick summary

["This blood test measures an amino acid and is interpreted alongside other laboratory and clinical findings."]

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

Key facts at a glance

LOINC
55813-0
Short code
A-Aminobutyr SFr SerPl
Synonyms
A-Aminobutyr SFr SerPl
Category
liver
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
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

What is this test?

This test measures alpha-aminobutyric acid, a type of amino acid, in serum or plasma. It is generally performed as part of a broader amino acid profile.

Why might I need this test?

A healthcare professional may order it to investigate unusual symptoms, evaluate amino acid metabolism, assess nutritional status, or monitor an existing health condition. It is usually interpreted together with the rest of the amino acid panel and other blood tests.

How is the test performed?

A blood sample is collected and separated into serum or plasma. The laboratory then measures alpha-aminobutyric acid using a validated amino acid testing method.

How do I prepare for the test?

Follow the instructions provided by your healthcare professional or laboratory. Some amino acid tests require an overnight fast, and food or supplements taken before the test can affect the results.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

A high or low alpha-aminobutyric acid result may reflect changes in amino acid metabolism, nutrition, liver function, illness, or medication effects. The result should be interpreted with symptoms, medical history, and the other results from the amino acid panel; a single value does not usually establish a diagnosis.

Short name

Alpha-aminobutyric acid

Frequently asked questions

Is fasting required for this test?
It depends on the laboratory and the reason for testing. Some amino acid profiles require an overnight fast, so follow the specific preparation instructions you receive.
Does an abnormal result mean I have an amino acid disorder?
Not necessarily. Abnormal results can have several causes and are usually confirmed or clarified with repeat testing and the rest of your laboratory evaluation.
What can affect my result?
Food intake, supplements, medications, illness, and changes in metabolism can affect amino acid levels. Tell your healthcare professional about relevant medicines, supplements, and recent illness.
  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