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Test Name

Amino Acid Analysis, LC/MS, Urine

To view specimen requirements and codes please Select a regional laboratory.

Not sure which laboratory serves your office? Call us 866-MYQUEST (866-697-8378)

CPT Code(s)**

82139, 82570
**IMPORTANT: CPT Code is informational only; obtain the Test Code for ordering.

Includes

1-Methylhistidine, 3-Methylhistidine, Alanine, Alpha-Amino Adipic Acid, Alpha-Amino Butyric Acid, Arginine, Asparagine, Aspartic Acid, Beta Alanine, Beta-Amino Isobutyric Acid, Citrulline, Cystathionine, Cystine, Ethanolamine, Gamma-Amino Butyric Acid, Glutamic Acid, Glutamine, Glycine, Histidine, Homocystine, Hydroxylysine, Hydroxyproline, Isoleucine, Leucine, Lysine, Methionine, Ornithine, Phenylalanine, Proline, Sarcosine, Serine, Taurine, Threonine, Tryptophan, Tyrosine, Valine, Creatinine Random Urine

Methodology

Liquid Chromatography/Mass Spectrometry (LC/MS)

Reference Range(s)

See Laboratory Report

Clinical Significance

Amino acid analysis is necessary for the diagnosis of a variety of inborn errors of metabolism. These include, but are not limited to, phenylketonuria, tyrosinemia, citrullinemia, non-ketotic hyperglycinemia, maple syrup urine disease, and homocystinuria. The assay is also key for the continued monitoring of treatment plans for these disorders and useful for assessing nutritional status of patients. Our methodology is highly accurate at very low levels as well as at elevated levels.

Reference ranges are provided as general guidance only. To interpret test results use the reference range in the laboratory report.

The CPT codes provided are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.

* The tests listed by specialist are a select group of tests offered. For a complete list of Quest Diagnostics tests, please refer to our Directory of Services.

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Amino Acid Analysis, LC/MS, Urine
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