Amino Acid Screen, Blood and Urine
is a topic covered in the Davis's Lab & Diagnostic Tests
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To assist in diagnosing congenital metabolic disorders in infants, typically homocystinuria, maple syrup urine disease, phenylketonuria (PKU), and tyrosinuria.
Instruct the caregiver/patient that a 12-hr fast is required prior to the procedure, as protein intake may alter results. If the patient is a neonate, most state regulations require screening specimens to be collected between 24 and 48 hr after birth to allow sufficient time after protein intake for abnormal metabolites to be detected. As appropriate, provide the required urine collection container and specimen collection instructions.
(Method: Liquid chromatography/mass spectrometry) There are numerous amino acids. Values vary, and the testing laboratory should be consulted for corresponding ranges.
Critical Findings and Potential Interventions
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Bladh, Mickey Lynn., and Anne M. Van Leeuwen. "Amino Acid Screen, Blood and Urine." Davis's Lab & Diagnostic Tests, 7th ed., F.A. Davis Company, 2017. Nursing Central, nursing.unboundmedicine.com/nursingcentral/view/Davis-Lab-and-Diagnostic-Tests/425488/all/Amino_Acid_Screen__Blood_and_Urine.
Bladh ML, Van Leeuwen AM. Amino Acid Screen, Blood and Urine. Davis's Lab & Diagnostic Tests. 7th ed. F.A. Davis Company; 2017. https://nursing.unboundmedicine.com/nursingcentral/view/Davis-Lab-and-Diagnostic-Tests/425488/all/Amino_Acid_Screen__Blood_and_Urine. Accessed July 17, 2019.
Bladh, M. L., & Van Leeuwen, A. M. (2017). Amino Acid Screen, Blood and Urine. In Davis's Lab & Diagnostic Tests. Available from https://nursing.unboundmedicine.com/nursingcentral/view/Davis-Lab-and-Diagnostic-Tests/425488/all/Amino_Acid_Screen__Blood_and_Urine
Bladh ML, Van Leeuwen AM. Amino Acid Screen, Blood and Urine [Internet]. In: Davis's Lab & Diagnostic Tests. F.A. Davis Company; 2017. [cited 2019 July 17]. Available from: https://nursing.unboundmedicine.com/nursingcentral/view/Davis-Lab-and-Diagnostic-Tests/425488/all/Amino_Acid_Screen__Blood_and_Urine.
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