Amino Acid Analysis for MSUD, Plasma
Test code
CPT code(s)*
Test resources
Test summary
Details
Includes
Valine
Isoleucine
Leucine
Alloisoleucine
Methodology
Chromatography/Mass Spectrometry
Assay category
This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by FDA. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.
Alternative name(s)
Maple Syrup Urine Disease,AA
Specimen requirements | |
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| Preferred specimen(s) | Select a service area to view this section. |
| Alternative specimen(s) | Select a service area to view this section. |
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| Reject criteria | Select a service area to view this section. |
Reference Range(s)
| Valine | |
| ≤30 days | 57-250 umol/L |
| 31 days-23 months | 84-354 umol/L |
| 2 years-17 years | 130-307 umol/L |
| ≥18 years | 132-313 umol/L |
| Isoleucine | |
| ≤30 days | 12-92 umol/L |
| 31 days-23 months | 10-109 umol/L |
| 2 years-17 years | 33-97 umol/L |
| ≥18 years | 34-98 umol/L |
| Leucine | |
| ≤30 days | 23-172 umol/L |
| 31 days-23 months | 43-181 umol/L |
| 2 years-17 years | 65-179 umol/L |
| ≥18 years | 73-182 umol/L |
| Alloisoleucine | <1 umol/L |
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 guidance 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.
This material contains content from LOINC® (http://loinc.org). The LOINC Table, LOINC Table Core are copyright © 1995-2019, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee and is available at no cost under the license at http://loinc.org/license.
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