any anomaly in the amount of a compound derived from an amino acid from reaction at an amino group, carboxy group, side-chain functional group, or from the replacement of any hydrogen by a heteroatom
abnormal amino acid level +
abnormal ammonia homeostasis +
abnormal blood homeostasis +
abnormal body temperature +
abnormal body temperature homeostasis +
abnormal catecholamine level +
abnormal cellular ATP level +
abnormal circadian hormone homeostasis
abnormal energy homeostasis +
abnormal enzyme/coenzyme level +
abnormal fluid regulation +
abnormal galactose homeostasis
abnormal gas homeostasis +
abnormal glucose homeostasis +
abnormal glycosaminoglycan level +
abnormal histamine physiology +
abnormal hormone level +
abnormal ion homeostasis +
abnormal lipid homeostasis +
abnormal lipoprotein level +
abnormal mineral homeostasis +
abnormal pH regulation +
abnormal porphyrin level +
abnormal protein level +
abnormal susceptibility to non-insulin-dependent diabetes +