本文报道1种测定立位和卧位蛋白尿选择性的诊断方法。方法体位性蛋白尿14例,男8,女6,年龄9～32岁,观察其有固定且可重复性的蛋白尿共3～78个月,卧位蛋白尿<30mg/dl,立位>30mg/dl。肾小球滤过率、尿沉渣、血沉、血清胆固醇、补体_3(C_3)均正常。经肾活检证实的肾炎14例,男9、女5,年龄12～72岁。收集病人正常立位昼尿8～15小时后,接着平卧30分钟排尿,将排出之尿并入首次尿 This article reports a method for the determination of the standing and lying proteinuria diagnostic methods. Methods 14 cases of orthostatic proteinuria, male 8, female 6, aged 9 to 32 years old, were observed with a fixed and reproducible proteinuria 3 to 78 months, lying proteinuria <30mg / dl, standing> 30mg / dl. Glomerular filtration rate, urine sediment, ESR, serum cholesterol, complement 3 (C_3) were normal. The renal biopsy confirmed nephritis in 14 cases, 9 males and 5 females, aged 12 to 72 years. Collecting patients with normal standing daytime urine for 8 to 15 hours, then supine for 30 minutes to urinate, the discharge of urine into the first urine