Amino acids, 2 to 5 amino acids, quantitative, each specimen
CPT4 code
Name of the Procedure:
Quantitative Amino Acid Analysis (2 to 5 amino acids)
Summary
Quantitative Amino Acid Analysis is a lab test that measures the levels of specific amino acids in a blood sample. This procedure is used to diagnose and monitor conditions related to amino acid metabolism, nutritional deficiencies, and certain medical treatments.
Purpose
The test evaluates the presence and concentration of up to five amino acids in the body. It is useful in diagnosing metabolic disorders, assessing the nutritional status of patients, and monitoring the efficacy of treatment plans.
Indications
- Unexplained symptoms such as fatigue, muscle weakness, or neurological issues.
- Diagnosing inborn errors of metabolism.
- Monitoring patients with known metabolic disorders.
- Assessing nutritional deficiencies or imbalances.
- Evaluating the metabolic effects of certain treatments or medications.
Preparation
- Fasting for 8-12 hours before the test may be required.
- Patients might need to refrain from taking certain medications or supplements.
- A healthcare provider may order preliminary diagnostic tests or assessments.
Procedure Description
- A healthcare provider will collect a blood sample, usually from a vein in the arm.
- The sample is sent to a laboratory equipped with specialized technology, such as high-performance liquid chromatography (HPLC) or mass spectrometry, for precise measurement.
- The laboratory quantifies the concentrations of the specified amino acids.
- The results are interpreted by a healthcare professional to determine any abnormalities.
Duration
The blood sample collection typically takes about 10-15 minutes. Laboratory analysis and results interpretation may take several hours to a few days.
Setting
This procedure is performed at a hospital, outpatient clinic, or diagnostic laboratory.
Personnel
- Phlebotomist or nurse for sample collection.
- Laboratory technologists and technicians for analysis.
- A physician, often a specialist in metabolic disorders, for interpretation of results.
Risks and Complications
- Minor risks from blood sample collection, such as bruising or infection at the puncture site.
- Rarely, patients might feel dizzy or faint temporarily.
Benefits
- Accurate measurement of specific amino acid levels.
- Helps diagnose metabolic disorders early.
- Guides appropriate treatment plans and dietary adjustments.
- Monitors the effectiveness of ongoing treatments.
Recovery
- Minimal recovery time is needed.
- Patients can typically resume normal activities immediately after sample collection.
- Follow-up may include dietary adjustments, medication changes, or further diagnostic tests based on the results.
Alternatives
- Urinary amino acid analysis, which may sometimes offer additional information.
- Comprehensive metabolic panel for a broader overview of metabolic status.
- Genetic testing for underlying metabolic disorders.
Patient Experience
- Mild discomfort during blood sample collection.
- No significant pain or recovery issues.
- Clear instructions provided to minimize risks and ensure accurate results.
- Follow-up consultations to discuss results and next steps for treatment or management.