Optimal Result: 0 - 35 mmol/mol creatinine.

Other names: AKG, α-KG, 2-oxoglutarate, 2OG

2-Oxoglutaric acid is an organic acid that is important for the proper metabolism of all essential amino acids. It is formed in the Krebs cycle, the energy-producing process that occurs in most body cells.

The Krebs cycle (aka Citric Acid cycle) is a series of chemical reactions used by all aerobic organisms to release stored energy through the oxidation of acetyl-CoA derived from carbohydrates, fats, and proteins into ATP.

2-Oxoglutaric acid is the nitrogen-free portion of the amino acids known as glutamine and glutamic acid, which is involved in protein synthesis that may play a role in supporting healthy blood glucose levels. 2-Oxoglutaric acid helps maintain normal levels of ammonia in the brain, muscles and kidneys, as well as the body’s nitrogen balance in body tissues and fluids.

2-Oxoglutaric acid is used by cells during growth and in healing from injuries and other wounds, and is especially important in the healing of muscle tissue.

2-Oxoglutaric acid is one of the most important nitrogen transporters in metabolic pathways. The amino groups of amino acids are attached to it (by transamination) and carried to the liver where the urea cycle takes place.

References:

- Alpha-Ketoglutarate: Physiological Functions and Applications [L]

- Urinary alpha-ketoglutarate is elevated in patients with hyperinsulinism-hyperammonemia syndrome. [L]

What does it mean if your 2-Oxoglutaric result is too high?

Elevated levels of 2-Oxoglutaric suggest dietary vitamin deficiencies or supplementation with 2-ketoglutaric acid. Coenzyme A (derived from pantothenic acid), flavin adenine dinucleotide (FAD) (derived from riboflavin), and thiamine are required for conversion of 2-oxoglutaric acid to succinyl-CoA.

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