Amino Acids (Urine) by The Great Plains Laboratory

1-Methylhistidine

Optimal range: 70 - 280 qM/g creatinine

3-Methylhistidine

Optimal range: 55 - 1100 qM/g creatinine

Alanine

Optimal range: 130 - 600 qM/g creatinine

Alpha-amino-N-butyrate

Optimal range: 5 - 72 qM/g creatinine

Alpha amniobutyric acid (AABA), also known as Alpha-amino-N-butyric acid (A-ANB), is an intermediate formed during the catabolism of methionine and threonine. Increases in AABA occur secondary to elevations of either methionine or threonine. AABA becomes propionic acid via alpha-ketobutyric acid in the presence of adequate amounts of thiamin, vitamin B2(as FAD), vitamin B3(as NAD), lipoic acid and magnesium. Deficiencies of any of these, or vitamin B6, could cause increases in AABA. Elevated or decreased levels of the amino acid may indicate a congenital enzyme defect.

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Alpha-aminoadipate

Optimal range: 6 - 72 qM/g creatinine

Alpha-aminoadipic acid (a-Aminoadipic acid) is an intermediary metabolite of lysine (primarily) and of tryptophan.

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Ammonia (NH4)

Optimal range: 12000 - 49000 qM/g creatinine

Ammonia Level (NH4)

Optimal range: 12000 - 49000 qM/g creatinine

Anserine

Optimal range: 0 - 95 qM/g creatinine

Arginine

Optimal range: 8 - 55 qM/g creatinine

Asparagine

Optimal range: 35 - 200 qM/g creatinine

Aspartate

Optimal range: 6 - 33 qM/g creatinine

Beta-alanine

Optimal range: 0 - 20 qM/g creatinine

Beta-aminoisobutyrate

Optimal range: 0 - 380 qM/g creatinine

Carnosine

Optimal range: 0 - 50 qM/g creatinine

Citrulline

Optimal range: 1 - 30 qM/g creatinine

Creatinine

Optimal range: 30 - 225 mg/dL

The urinary creatinine concentration (CC) represents the actual creatinine concentration in the specimen that was submitted.

Under normal conditions, the rate of excretion of creatinine is quite constant and highly correlated with lean body mass (muscle). However, the CC can vary significantly as a function of urine volume.

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Cystathionine

Optimal range: 8 - 50 qM/g creatinine

Cysteine

Optimal range: 25 - 73 qM/g creatinine

Cystine

Optimal range: 30 - 105 qM/g creatinine

Ethanolamine

Optimal range: 120 - 440 qM/g creatinine

Gamma-aminobutyrate

Optimal range: 0 - 7 qM/g creatinine

Gamma-aminobutyrate (GABA) is the major inhibitory neurotransmitter found in the CNS and, as such, is important for balancing excitatory action of other neurotransmitters.

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Glutamate

Optimal range: 10 - 52 qM/g creatinine

Glutamine

Optimal range: 155 - 650 qM/g creatinine

Glutamine/Glutamate

Optimal range: 3 - 120 Ratio

Glycine

Optimal range: 350 - 3500 qM/g creatinine

Histidine

Optimal range: 350 - 1700 qM/g creatinine

Homocystine

Optimal range: 0 - 1 qM/g creatinine

Hydroxyproline

Optimal range: 0 - 45 qM/g creatinine

Hydroxyproline is a collagen related amino acid. Hydroxyproline is a nonessential amino acid, which means that it is manufactured from other amino acids in the liver. Hydroxyproline is necessary for the construction of the body’s major structural protein, collagen. Hydroxyproline is present in essentially all tissues and all genetic types of collagen.

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Isoleucine

Optimal range: 5 - 30 qM/g creatinine

Leucine

Optimal range: 8 - 80 qM/g creatinine

Lysine

Optimal range: 40 - 530 qM/g creatinine

Methionine

Optimal range: 8 - 48 qM/g creatinine

Methionine Sulfoxide

Optimal range: 0 - 10 qM/g creatinine

Ornithine

Optimal range: 3 - 45 qM/g creatinine

Phenylalanine

Optimal range: 25 - 100 qM/g creatinine

Phosphoethanolamine

Optimal range: 20 - 75 qM/g creatinine

Phosphoserine

Optimal range: 0.05 - 0.8 qM/g creatinine

Proline

Optimal range: 1 - 55 qM/g creatinine

Sarcosine

Optimal range: 0 - 10 qM/g creatinine

Serine

Optimal range: 125 - 560 qM/g creatinine

Taurine

Optimal range: 220 - 1300 qM/g creatinine

Threonine

Optimal range: 56 - 320 qM/g creatinine

Tryptophan

Optimal range: 20 - 100 qM/g creatinine

Tyrosine

Optimal range: 28 - 120 qM/g creatinine

Tyrosin is the non-essential amino acid precursor for dopamine, norepinephrine and epinephrine. Tyrosine hydroxylase converts tyrosine into the dopamine precursor L-DOPA; BH4, Vitamin D and iron are cofactors for that enzymatic activity.

Tyrosine enhances cognitive performance, energy, and alertness, and improves memory after sleep deprivation.

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Urea

Optimal range: 150 - 590 mM/g

Valine

Optimal range: 15 - 70 qM/g creatinine
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