Disclosed is an acetyltransferase activity measuring agent which contains an arylamine derivative. As the arylamine derivative, sodium p-aminohippurate can be used preferably. Use of the acetyltransferase activity measuring agent of this invention permits a simple and safe diagnosis of the progress of the pathema of nephritis, which is accompanied by a mesangial proliferative lesion, or renal insufficiency. Furthermore, the scattering of measured values is small, thereby assuring an accurate diagnosis.
                            所公开的乙酰转移酶活性测量剂含有一种芳基胺衍
生物。作为芳基胺衍
生物,最好使用对
氨基七酸
钠。使用本发明的乙酰转移酶活性测量剂可以简单安全地诊断肾炎病变(伴有肾间质增生病变)或肾功能不全的进展情况。此外,测量值的分散性很小,从而确保了诊断的准确性。