part of part of has part has part characteristic of inheres in has modifier N-nicotinoylglycine Abnormal circulating nitrogen compound concentration Abnormal circulating nicotinurate concentration 2018-09-11T23:40:08Z Abnormal circulating N-nicotinoylglycine level Abnormal circulating nicotinurate level Nicotinuric acid is an acyl glycine, which are normally minor metabolites of fatty acids. However, the excretion of certain acyl glycines is increased in several inborn errors of metabolism. In certain cases the measurement of these metabolites in body fluids can be used to diagnose disorders associated with mitochondrial fatty acid beta-oxidation. Nicotinuric acid is the major detoxification product of nicotinic acid. It may serve as a simple quantitative index of hepatic biotransformation of nicotinic acid. Any deviation from the normal concentration of nicotinurate in the blood. amount abnormal blood