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Amino Acid, Fractionated
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    Amino Acid, Fractionated

    Product Code: LAmb

    Price: $345.00

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    Test Description

    Amino Acid, Fractionated

    Amino acids (AA) are the building blocks of all proteins and are characterized by the presence of at least one amino group (NH2) and carboxyl or acid group (COOH), hence the name amino acid. Many amino acids are produced by the body, others called essential amino acids, cannot be synthesized by the body in adequate amounts and must be obtained from the diet. 

    The essential amino acids are isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine. Semi-essential AA (some are made by the body but not enough to meet the body's needs) are arginine, histidine, cysteine and taurine. Some disorders associated with AA imbalances include alcoholism, ataxia, behavioral disorders, cardiovascular disease, depression, insomnia, hypertension, eye problems, poor wound healing, digestive problems. Inborn errors of amino acid metabolism, includes phenylketonuria (PKU), tyrosinemia, alkaptonuria, maple syrup urine disease (MSUD), etc.

    Amino acids may be ordered as a profile of Essential AA, or as Fractionated AA. The essential AA profile contains arginine, histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine. The fractionated AA profile includes the essential AA plus alanine, asparagine, aspartic acid, a-amino-N-butyric acid, citrulline, cystine, glutamine, glutamic acid, glycine, hydroxyproline, ornithine, proline, serine, tyrosine, and taurine.

    Profile Includes: Aspartic acid; glutamic acid; hydroxyproline; serine; asparagine; glycine; glutamine; taurine; histidine; citrulline; threonine; alanine; arginine; proline; a-amino-N-butyric acid; tyrosine; valine; methionine; cystine; isoleucine; leucine; phenylalanine; tryptophan; ornithine; lysine;

    Test Details

    Process time: 5 to 7 business days

    Process method: The methodology is by HPLC

    CPT code: 82131 (x25)

    Special instructions: None

    Rejection causes: Gross Hemolysis

    Collection Instructions

    Patient prep: Fasting

    Specimen volume: 1.5 mL EDTA plasma

    Minimum volume: 0.5 mL

    Collection container: EDTA tube

    Transport container: Plastic transport tube

    Transport instructions: Freeze

    Collection instructions: Click here for PDF


    Normal values:
    (Amino Acid: Low - High Unit)
    Glutamine: 48 - 84 umol/dL
    Taurine: 2.8 - 6.8 umol/dL
    Histidina: 2.4 - 10.0 umol/dL
    Isoleucine: 4.0 - 10.0 umol/dL
    Leucine: 9.5 - 19.5 umol/dL
    Lysine: 11 - 25 umol/dL
    Methionine: 1.7 - 4.5 umol/dL
    Phenylalanine: 3.5 - 8.4 umol/dL
    Threonine: 5.5 - 14.1 umol/dL
    Tryptophan: 0.7 - 2.0 umol/dL
    Valine: 18.0 - 34.0 umol/dL
    Arginine: 3.0 - 8.0 umol/dL


    Reference one: Alverdy, J.C. Effects of glutamine-supplemented diets on immunology of the gut. J Parent Ent Nutr, 1990,14(4):1095-1135

    Reference two: Meyer, NA, Muller, MJ, Herndon DN Nutrition support of the healing wound. New Horz, 1994,2(2):202-214

    Reference three: Shih, V.E. Amino acid analysis. PhysicianÆs guide to the laboratory diagnosis of metabolic diseases. 1996; London: Chapman and Hall Medical.

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