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LABORATORY TEST DIRECTORY

Amino Acids Quantitative by LC-MS/MS, Plasma

CPT Code(s): 82139
Specimen Required: Patient Preparation: Adults: Fasting specimen preferred. Infants and children: Draw specimen prior to feeding or 2-3 hours after a meal.
Collect: Green (sodium or lithium heparin).
Specimen Preparation: Separate plasma from cells ASAP or within 2 hours of collection. Avoid transferring buffy coat material. Transfer 0.5 mL plasma to an RDL Standard Transport Tube and freeze immediately. (Min: 0.25 mL)
Storage/Transport Temperature: CRITICAL FROZEN. Separate specimens must be submitted when multiple tests are ordered.
Stability: After separation from cells: Ambient: Unacceptable; Refrigerated: 24 hours; Frozen: 1 month
New York DOH Approval Status: This test is New York DOH approved.
Aliases:
  • Allo-Isoleucine  Amino Acids, Maple Syrup Urine Disease Panel, Plasma
  • Argininosuccinic Acid (ASA)
  • Branched Chain Amino Acids
  • CystineFree Homocystine
  • Glycine
  • Isoleucine
  • Isovaleric Acidemia
  • Leucine
  • Methylmalonic Acidemia (MMA)
  • Mitochondrial Energy Metabolism (Primary Lactic Acidemias)
  • Nonketotic Hyperglycinemia (NKH)
  • Phenylketonuria (PKU)
  • Propionic Acidemia
  • Quantitative Plasma AminoValine