Which statement about orthostatic proteinuria is most accurate?

Which statement about orthostatic proteinuria is most accurate?

• A. It is typically due to kidney failure
• B. It is common and mostly benign with annual monitoring
• C. It requires immediate nephrology referral
• D. It shows high protein in the morning urine

Answer: (B)

Orthostatic proteinuria occurs when protein excretion rises during upright activity and returns to normal after lying down. In children, this pattern is common and usually benign, with normal kidney function. Because the proteinuric pattern is tied to posture and generally resolves or remains nonpathogenic, the typical approach is reassurance and periodic monitoring, often with annual urinalysis to ensure no change over time. Immediate referral to nephrology isn’t needed unless there are red flags such as persistent heavy proteinuria, abnormal kidney function, hypertension, or edema, which would suggest another renal issue. The hallmark of orthostatic proteinuria is the presence of protein in daytime urine but little or no protein in the first-morning urine, not high morning protein. That’s why the statement describing it as common and mostly benign with annual monitoring best fits.

Orthostatic proteinuria occurs when protein excretion rises during upright activity and returns to normal after lying down. In children, this pattern is common and usually benign, with normal kidney function. Because the proteinuric pattern is tied to posture and generally resolves or remains nonpathogenic, the typical approach is reassurance and periodic monitoring, often with annual urinalysis to ensure no change over time. Immediate referral to nephrology isn’t needed unless there are red flags such as persistent heavy proteinuria, abnormal kidney function, hypertension, or edema, which would suggest another renal issue. The hallmark of orthostatic proteinuria is the presence of protein in daytime urine but little or no protein in the first-morning urine, not high morning protein. That’s why the statement describing it as common and mostly benign with annual monitoring best fits.