Proteinuria, Orthostatic Proteinuria

If urinalysis reveals protein in the urine of any child, an evaluation is mandatory.

In the absence of symptoms such as edema, abdominal or flank pain, dysuria, or fever, evaluation of proteinuria can proceed in a stepwise manner.

Orthostatic Proteinuria


Renal ultrasonography eventually may be necessary in a patient who has proteinuria that does not disappear on the first- morning specimen. A 24-hour urine collection for protein determination also is reserved for patients who have proof of protein in the urine on the first-morning specimen.

CHLA Board Review 2005
Larson TS. Evaluation of proteinuria. Mayo Clin Proc. 1994;69:1154-1158
Loghman-Adham M. Evaluating proteinuria in children. Am Fam Physician.
1998;58:1145-1152, 1158-1159
Wingo CS, Clapp WL. Proteinuria: potential causes and approach to
evaluation. Am J Med Sci. 2000;320:188-194