15 yo WM presents after referral to you for proteinuria. U/A shows 1+ proteinuria (no other abnormalities), no edema, normal cholesterol, and no significant PMH/FH. Urine protein/creatinine ratio is 0.148 and quantitative protein is 25 (normal 2-10). What is the most likely dx?
a. minimal change dz
b. post streptococcal GN
c. benign orthostatic proteinuria
d. membranous GN
e. lupus nephritis
c. Benign orthostatic proteinuria
A 15-year-old with isolated proteinuria, normal cholesterol, no edema, and normal renal function likely has benign orthostatic proteinuria, a common and harmless condition in adolescents.