Urinalysis and Body Fluids 6th Edition by Majorie DiLorenzo, Susan Strasinger

Exercise 33

A patient with a 2+ protein reading in the afternoon is asked to submit a first morning specimen. The second specimen has a negative protein reading. This patient is:

A. Positive for orthostatic proteinuria

B. Negative for orthostatic proteinuria

C. Positive for Bence Jones protein

D. Negative for clinical proteinuria

Step 1 of 3

Orthostatic proteinuria:

• It is a persistent proteinuria occurs in young adults

• It is a type of renal proteinuria, in which elevated pressure on renal vein during vertical position results in this condition

• Patients are requested to empty the bladder, and collect urine specimen immediately after arising in the morning

• Second specimen is requested to collect after being in vertical position for some hours

• Both the specimen are evaluated for protein

• Negative reading is seen in first morning, and positive result is seen in second specimen if orthostatic specimen is present