investigation result abnormal AE increased nonprotein nitrogen AE 非蛋白氮增加 Increased nonprotein nitrogen AE is an investigation result abnormal AE that shows increased nonprotein nitrogen, the nitrogenous constituents of the blood exclusive of the protein bodies, consisting of the nitrogen of urea, uric acid, creatine, creatinine, amino acids, polypeptides, and an undetermined part known as rest nitrogen. JX, LW, YH