24-Hour Urine Protein

Urine protein tests detect and/or measure protein being released into the urine. Elevated levels may be seen temporarily with conditions such as infections, stress, pregnancy, diet, cold exposure, or heavy exercise. Persistent protein in the urine suggests possible kidney damage or some other condition that requires additional testing to determine the cause.

The normal range of urine protein elimination is less than 150 mg/day and less than 30 mg of albumin/day.

A negative test result means that there is no detectable amount of protein in the urine at the time of testing.
Persistent and/or an increased amount of protein in the urine may indicate kidney damage or disease. With kidney disease, the amount of protein present is generally associated with the severity of damage. Increasing amounts of protein over time indicate increasing damage and decreasing kidney function.

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