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Optimal range: 0 - 6 mmol/mol creatinine
Arginine is found in all protein foods and is very abundant in seeds and nuts. It is considered a semi-essential amino acid during early development, infection/inflammation, or renal and/or intestinal impairment. It has many functions in the body including:
- ammonia disposal in the urea cycle
- immune function
- stimulation of insulin release
- muscle metabolism (creatine/creatinine precursor)
- nitric oxide (NO) formation
- glutamic acid and proline formation
- glucose/glycogen conversion
- stimulation of the release of growth hormone, vasopressin, and prolactin
- wound healing
Because arginine is a precursor for nitric oxide synthesis, it is often used therapeutically in cardiovascular disease for its vasodilatory effects.
Optimal range: 0 - 26.4 nmol/mg Creatinine
→ Arginine is a precursor of urea, nitric oxide, polyamines (putrescine, spermidine, spermine and agmatine), proline, glutamate, and creatine.
→ Levels may drop with increased need, or in renal or small intestine dysfunction.
→ Synthesis of arginine depends on citrulline levels and is less regulated by dietary arginine. Supplementation with citrulline increases plasma arginine and the production of nitric oxide (NO).
→ Arginine supplementation may lower blood pressure.
→ Metabolism of elevated arginine levels is dependent on glycine availability.
→ Plasma arginine and ornithine increased, while citrulline remained stable, following watermelon juice intake, a rich source of citrulline.
Optimal range: 43 - 107 umol/L
Arginine is found in all protein foods and is very abundant in seeds and nuts. It is considered a semi-essential amino acid during early development, infection/inflammation, or renal and/or intestinal impairment.
Optimal range: 5 - 69.6 umol/g Cr
Arginine is found in all protein foods and is very abundant in seeds and nuts. It is considered a semi-essential amino acid during early development, infection/inflammation, or renal and/or intestinal impairment. It has many functions in the body including:
- ammonia disposal in the urea cycle
- immune function
- stimulation of insulin release
- muscle metabolism (creatine/creatinine precursor)
- nitric oxide (NO) formation
- glutamic acid and proline formation
- glucose/glycogen conversion
- stimulation of the release of growth hormone, vasopressin, and prolactin
- wound healing
Because arginine is a precursor for nitric oxide synthesis, it is often used therapeutically in cardiovascular disease for its vasodilatory effects.
Optimal range: 4.1 - 17.5 qmol/dL
Arginine is found in all protein foods and is very abundant in seeds and nuts. It is considered a semi-essential amino acid during early development, infection/inflammation, or renal and/or intestinal impairment.
Optimal range: 6 - 45 qM/g creatinine
LEARN MOREOptimal range: 36.3 - 119.2 umol/L
Arginine is a conditionally essential amino acid that is critical for your cardiovascular health and detoxification functions. The amino acid, arginine, is used to make the powerful blood vessel regulator, nitric oxide. Nitric oxide acts to lower blood pressure.
Optimal range: 4.1 - 17.5 Units
Arginine is found in all protein foods and is very abundant in seeds and nuts. It is considered a semi-essential amino acid during early development, infection/inflammation, or renal and/or intestinal impairment. It has many functions in the body including:
- ammonia disposal in the urea cycle
- immune function
- stimulation of insulin release
- muscle metabolism (creatine/creatinine precursor)
- nitric oxide (NO) formation
- glutamic acid and proline formation
- glucose/glycogen conversion
- stimulation of the release of growth hormone, vasopressin, and prolactin
- wound healing
Because arginine is a precursor for nitric oxide synthesis, it is often used therapeutically in cardiovascular disease for its vasodilatory effects.
Optimal range: 3 - 43 micromol/g creatinine
Arginine is found in all protein foods and is very abundant in seeds and nuts. It is considered a semi-essential amino acid during early development, infection/inflammation, or renal and/or intestinal impairment.
Optimal range: 10 - 70 qmol/24 hours
LEARN MOREOptimal range: 1.9 - 55.3 umol/L
Arginine is found in all protein foods and is very abundant in seeds and nuts. It is considered a semi-essential amino acid during early development, infection/inflammation, or renal and/or intestinal impairment.
Optimal range: 29 - 137 µmol/L , 2.90 - 13.70 µmol/dL
Arginine is a conditionally essential amino acid that is critical for your cardiovascular health and detoxification functions. The amino acid, arginine, is used to make the powerful blood vessel regulator, nitric oxide. Nitric oxide acts to lower blood pressure.
Optimal range: 36.9 - 112.2 nmol/ML
LEARN MOREOptimal range: 81.6 - 249 nmol/ML
Physiological Function:
L-Arginine is a conditionally essential amino acid found in the diet. It is a dietary supplement used mostly by athletes because it is the amino acid that directly produces nitric oxide via the nitric oxide synthase enzymes.
Arginine helps heal injuries, aids kidneys in removing waste, and boosts immune system function.
Optimal range: 3 - 43 micromol/g creatinine
Arginine is a conditionally essential amino acid that is critical for your cardiovascular health and detoxification functions. The amino acid, arginine, is used to make the powerful blood vessel regulator, nitric oxide. Nitric oxide acts to lower blood pressure.
Optimal range: 0 - 3 umol/L
Argininosuccinate (aka Arginosuccinic acid) is a basic amino acid. Some cells synthesize it from citrulline, aspartic acid and use it as a precursor for arginine in the urea cycle or Citrulline-NO cycle. The enzyme that catalyzes the reaction is argininosuccinate synthetase. Argininosuccinic acid is a precursor to fumarate in the citric acid cycle via argininosuccinate lyase. Defects in the argininosuccinate lyase enzyme can lead to argininosuccinate lyase deficiency, which is an inborn error of metabolism.
Optimal range: 0.1 - 51.2 umol/g Cr
Argininosuccinate (aka Arginosuccinic acid) is a basic amino acid. Some cells synthesize it from citrulline, aspartic acid and use it as a precursor for arginine in the urea cycle or Citrulline-NO cycle. The enzyme that catalyzes the reaction is argininosuccinate synthetase. Argininosuccinic acid is a precursor to fumarate in the citric acid cycle via argininosuccinate lyase. Defects in the argininosuccinate lyase enzyme can lead to argininosuccinate lyase deficiency, which is an inborn error of metabolism.
Optimal range: 0 - 29.5 nmol/mg Creatinine
It is not normally detectable in healthy adults. Adult argininosuccinate lyase insufficiencies are typically treated with a lower protein/higher carbohydrate diet, arginine supplementation, and avoidance of fasting.
Optimal range: 0 - 14.2 nmol/ML
LEARN MOREOptimal range: 23.8 - 42.9 pmol/min/ml
Aromatic L-amino acid decarboxylase (AADC) enzyme plays a crucial role in the human body's ability to process certain amino acids into neurotransmitters, which are chemical messengers that transmit signals in the brain and other areas of the nervous system.
AADC acts on L-amino acids, particularly those with an aromatic side chain, such as L-dopa (levodopa), converting them into dopamine, and 5-hydroxytryptophan into serotonin. These neurotransmitters are essential for regulating mood, movement, and autonomic functions within the body.
The assessment of AADC enzyme activity can help diagnose AADC deficiency—a rare but serious condition that affects neurotransmitter synthesis, leading to developmental delays, movement disorders, and autonomic dysfunction. By evaluating this marker, healthcare providers can gain insights into a patient's neurotransmitter production capabilities, guiding diagnosis and treatment strategies for conditions influenced by neurotransmitter levels. This makes the Aromatic L-amino acid decarboxylase enzyme a significant point of interest for researchers and clinicians alike, offering a window into the complex interplay of genetics, enzyme activity, and neurological health.