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Alpha-Aminoadipic Acid, 24-Hour Urine — Excretion Rate

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

This test measures how much alpha-aminoadipic acid is excreted in urine over 24 hours. It may help evaluate certain inherited disorders of amino acid metabolism.

Quick summary

["The result shows the amount of alpha-aminoadipic acid your body released in urine during a 24-hour collection."]

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

Key facts at a glance

LOINC
25304-7
Short code
AAA 24h Ur-sRate
Synonyms
AAA 24h Ur-sRate
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?

Alpha-aminoadipic acid is a compound involved in amino acid metabolism. This test measures the amount excreted in urine over 24 hours, providing information about how your body is processing this metabolic pathway.

Why might I need this test?

This test may be ordered as part of an evaluation for developmental delays, unusual symptoms, or suspected inherited metabolic disorders. It is typically interpreted together with other urine, blood, and genetic tests.

How is the test performed?

You collect all urine produced during a specified 24-hour period. The laboratory then measures the total amount of alpha-aminoadipic acid in the collection and accounts for the collection time and total urine volume.

How do I prepare for the test?

Follow the laboratory's collection instructions carefully, including the exact start and stop times. Record the total urine volume if requested, and ask the laboratory about refrigeration, preservatives, medication guidance, and dietary restrictions.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

24-Hour Urine Alpha-Aminoadipic Acid

Frequently asked questions

Why is a 24-hour urine collection needed?
A 24-hour collection measures the total amount released by the body rather than the concentration in one urine sample. This can provide a more representative estimate of daily excretion.
What if part of the urine collection is missed?
An incomplete collection can make the result inaccurate. Ask the laboratory whether you should repeat the collection and follow its instructions for including every urine sample during the 24-hour period.
Does one abnormal result confirm a metabolic disorder?
No. An abnormal result may support further evaluation, but it must be interpreted with symptoms, medical history, and other laboratory or genetic tests.
  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