A component of the dietary peptide anserine.
Amino Acids Analysis
Amino acid nutritional testing aids in the identification of the following:
- dietary protein adequacy
- 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 amino acid metabolism.
Plasma vs. Urine Analysis:
Plasma is traditionally used to assess the status of essential amino acids while urine analysis provides more information regarding admino acid wasting and aberrant metabolism associated with co-factor insufficiencies.
Plasma amino acid nutritional testing measures what is being transported at the time of sampling. The specimen should be collected after an overnight fast to reduce the influence of dietary protein. Abnormalities are deduced by comparison of measured levels with an established reference range.
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.
Biomarkers in this category
39 biomarkers · optimal ranges shown
An amino acid which is excreted in human urine.
An intermediate occurring in the catabolism of two essential amino acids, methionine, and threonine.
An intermediary metabolite of lysine and tryptophan.
A non-essential amino acid
Part of a group of Beta-Amino Acids and Derivatives.
A conditionally essential amino acid.
A non-essential amino acid
A nonessential protein amino acid
A non-essential amino acid.
Amino acid end product of the pyrimidine metabolism.
A dietary peptide
Urea Cycle Marker
Serine and B-6 are required to produce Cystathionine.
a B6 dependent marker
Cystine is the oxidized form of cysteine.
Metabolite of serine
Has calming effect on nervous activity.
A non-essential amino acid.
A precursor to glutamate and GABA
Amino acid with important functions within the body.
An amino acid.
One of the three branched-chain amino acids
A branched-chain amino acid
An alpha-amino acid that is used in the biosynthesis of proteins.
An essential amino acid
Urea Cycle Marker
A precursor for the amino acid tyrosine.
Important in in phospholipid metabolism.
Phosphoserine is a product of glycolysis.
A nonessential amino acid
Byproduct in the glycine synthesis and degradation
Necessary for the biosynthesis of acetylcholine
A sulfur-containing amino acid required for bile formation.
An essential amino acid
Required for production of serotonin.
Tyrosin is the non-essential amino acid precursor for dopamine, norepinephrine and epinephrine.
Urea Cycle Marker
An essential amino acids.