肾脏是各类疾病易损害的靶器官之一,由于靶器官的病变是可逆的,因此早期发现肾损害并及时治疗可减缓肾脏病变的发展过程,有利于疾病向好的方向转变。当发生肾小球性蛋白尿,尿中会出现白蛋白(A lb)、转铁蛋白(TRF)、IgG、IgA、C3等,而在肾小球损伤早期,程度较轻时,尿中仅有A lb, Kidney is one of the most vulnerable target organs of various diseases. Since the lesions of target organs are reversible, early detection of renal damage and timely treatment may slow down the development of kidney disease, which is conducive to the change of disease. In the event of glomerular proteinuria, albumin (A lb), transferrin (TRF), IgG, IgA, C3, etc. appear in the urine, whereas in the early stage of glomerular injury, There A lb,