• Proteinuria in adults is defined as the excretion of >150 mg of protein per day (normal protein excretion rate is 80-150 mg)
• Dipstick analysis will detect concentrations as low as 10 mg/dL
The protein concentration of urine alters the urine pH and this results in a change in the color of the pH-sensitive dye on the dipstick. Albumin, the primary urinary protein, causes the dipstick to turn green; the darker the green, the greater the urinary protein concentration.
Causes of false negatives include—
• Alkaline urine
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