Not offered in Quest Diagnostics Nichols Institute (IFD) – San Juan Capistrano. Please provide SERVICE AREA INFORMATION to find available tests you can order.
In-home collection is not available in your area through Quest Mobile.
Clinical Significance
Amino Acid Analysis, Plasma - 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.
Collect plasma specimens after an overnight fast (or at least 4 hours after a meal). Non-fasting samples are acceptable for pediatric patients
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.
Collect plasma specimens after an overnight fast (or at least 4 hours after a meal). Non-fasting samples are acceptable for pediatric patients
Methodology
Chromatography/Mass Spectrometry
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.
2 mL plasma collected in a sodium heparin (green-top) tube
Alternative Specimen(s)
Plasma collected in: EDTA (lavender-top) or lithium heparin (green-top) tube
Minimum Volume
0.25 mL
Collection Instructions
Plasma should be separated from cells as soon as possible after collection. Freeze plasma below -20° C. Patient age is required for correct reference range.
Transport Container
Transport tube
Transport Temperature
Frozen
Specimen Stability
Room temperature: Unacceptable Refrigerated: 7 days Frozen: 28 days
2 mL plasma collected in a sodium heparin (green-top) tube
Plasma collected in: EDTA (lavender-top) or lithium heparin (green-top) tube
0.25 mL
Plasma should be separated from cells as soon as possible after collection. Freeze plasma below -20° C. Patient age is required for correct reference range.
Transport tube
Frozen
Room temperature: Unacceptable Refrigerated: 7 days Frozen: 28 days
Not offered in Quest Diagnostics Nichols Institute (IFD) – San Juan Capistrano. Please provide SERVICE AREA INFORMATION to find available tests you can order.
In-home collection is not available in your area through Quest Mobile.
