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Amino Acids, Urine (24 hr)

Test ID: DOCAA U
Orderable by Ontario ND

Test

Method

LC/MS QQQ

Report Includes

1-Methylhistidine; 3-Methylhistidine; A-Amino-n-butyrate; A-Aminoadipate; Alanine; Ammonia; Anserine; Arginine; Asparagine; Aspartic Acid; B-Alanine; B-Aminoisobutyrate; Carnosine; Citrulline; Creatinine; Cystathionine; Cysteine; Cystine; Ethanolamine; G-Aminobutyrate; Glutamic Acid; Glutamine : Glutamate; Glutamine; Glycine; Histidine; Homocystine; Hydroxyproline; Isoleucine; Leucine; Lysine; Met Sulfoxide; Methionine; Ornithine; Phenylalanine; Phosphoethanolamine; Phosphoserine; Proline; Sarcosine; Serine; Taurine; Threonine; Tryptophan; Tyrosine; Urea; Valine

Specimens

Urine

Clinical Utility

Amino acid (AA) analysis aids in the identification of dietary protein adequacy and amino acid balance, gastrointestinal dysfunctions, forms of protein intolerance, vitamin and mineral deficiencies, renal and hepatic dysfunction, psychiatric abnormalities, susceptibility to inflammatory response and oxidative stress, reduced detoxification capacity and many other inherent and acquired disorders in AA metabolism. Plasma is traditionally used to assess the status of essential AA while urine analysis provides more information regarding AA wasting and aberrant metabolism associated with co-factor insufficiencies.

The 24-hour urine amino acid analysis has the highest probability of detecting abnormalities if renal function is normal. The 24-hour test indicates what is high and low over the course of a day, reflects blood and tissue amino acid pools, and is not affected by circadian rhythm. Healthy kidneys efficiently conserve essential amino acids. Therefore, urine levels of amino acids decrease first and tend to give an earlier indication of inadequacy than do plasma levels.
A first morning void urine (FMV) amino acid analysis, with results normalized per gram creatinine, provides an alternative when a complete 24-hour collection is not a viable option. The FMV analysis is excellent for identification of marked abnormalities, particularly with respect to gastrointestinal health, inherited disorders in amino acid metabolism and renal function, and can be used for protein challenge testing.

Source: https://www.doctorsdata.com/urine-amino-acids/; Accessed 21-Oct-2016

Test Location

Doctor's Data, IL, USA

Test Version

9-May-2022

Specimen

Specimens

Urine

Sample Volume

30 mL

Minimum Volume

5 mL

Collection & Handling

Handling Information

Specimen must be frozen a minimum of 6 hours before shipping. Transport cold.

Additional Information

A specimen collection kit is available. To order a kit online, please register or login. For assistance or more information, please click here to send us an email or call 416-422-3000 x 300.

For additional information refer to the Doctors Data website Urine Amino Acids

Stability

Refrigerated 6 Days

Test Version

9-May-2022

Performance / Interpretation

Method

LC/MS QQQ

Turnaround Time

7 Days

Sample Reports

Sample Report at external website.

Test Location

Doctor's Data, IL, USA

Test Version

9-May-2022

Interface / Setup

Sample Reports

Sample Report at external website.

Test Version

9-May-2022