Alpha-Aminobutyric Acid, 24-Hour Urine — Substance Concentration
Measures alpha-aminobutyric acid in urine collected for 24 hours to help evaluate amino acid handling by the kidneys.
["This test measures how much alpha-aminobutyric acid your kidneys excrete over a full day."]
Key facts at a glance
- LOINC
- 25848-3
- Short code
- A-Aminobutyr 24h Ur-sCnc
- Synonyms
- A-Aminobutyr 24h Ur-sCnc
- Category
- liver
- Sample
- urine
- Container
- Sterile urine container
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Specimen volume
- 10 mL
- Stability
- Room temperature: 2h, Refrigerated: 24h, Frozen: 7d
- Hemolysis max
- 0
- Lipemia max
- 0
- Icterus max
- 0
- TAT
- 4–24 hours
- Order
- routine
What is this test?
This test measures the concentration of alpha-aminobutyric acid, an amino acid, in a 24-hour urine collection. The result can also be used with the total urine volume to calculate the amount excreted during the collection period.
Why might I need this test?
A 24-hour urine amino acid test may be ordered to evaluate how the kidneys reabsorb and excrete amino acids. It can be used in the evaluation of suspected kidney transport problems, nutritional concerns, or unexplained changes in urine amino acid levels.
How is the test performed?
You collect all urine produced during a full 24-hour period according to the laboratory's instructions. The laboratory then measures the alpha-aminobutyric acid concentration and accounts for the total volume collected when reporting the daily amount.
How do I prepare for the test?
Follow the collection instructions provided by your healthcare professional and record the start and end times. Do not omit urine during the collection period. Ask the laboratory about storage requirements and whether you should temporarily adjust your usual diet or medications; fasting is not routinely required unless specifically directed.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
An elevated daily amount may reflect reduced kidney reabsorption, increased production or intake of amino acids, or medication effects. A lower amount may be influenced by low intake, altered metabolism, or collection and laboratory factors. Results should be interpreted alongside kidney function, diet, medications, age, and the full 24-hour urine volume.
Short name
24-Hour Urine Alpha-Aminobutyric Acid
Frequently asked questions
Why is a 24-hour urine collection needed?
What if part of the urine collection is missed?
Does an abnormal result diagnose a specific condition?
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