What does proteinuria 3+ mean?

Proteinuria 3+ is usually the result of 24-hour urine protein quantitative examination, indicating that urine contains a certain amount of protein.

Under normal circumstances, human urine does not contain protein or only contains trace protein. 24-hour urine protein quantitative examination shows that proteinuria 3+ indicates that 1L of urine contains protein 2.0-4.0g, which is an abnormal phenomenon, usually caused by various diseases, such as glomerulonephritis, membranous nephropathy, lupus nephritis, acute tubular necrosis, hemolytic anemia, etc.

It is recommended that patients pay attention to observation, and further examination can be done if necessary, and targeted treatment should be given after clarifying the cause.