<unk>  (MGA) is any of at least five metabolic disorders that impair the body's ability to make energy in the mitochondria. As a result of this impairment,<unk><unk>  acid and<unk> -methylglutaric acid build up and can be detected in the urine.<unk><unk>  acid is an organic acid. The double carboxylic acid functions are the principal cause of the strength of this acid.<unk><unk>  acid can be detected by the presence of the acid function and the double connection that involves reactivity with some specific substances.
3-Methylglutaconic aciduria
Urocanic aciduria
Hawkinsinuria
Alpha-aminoadipic and alpha-ketoadipic aciduria
Homocystinuria
2-Hydroxyglutaric aciduria
Cystathioninuria
Phenylketonuria