Urine protein negative. What does a minus sign mean?

A negative result usually indicates that there is no abnormal protein detected in urine.

Urine protein test is a commonly used test item in clinical practice to evaluate kidney function and screen for kidney diseases. Under normal circumstances, urine of healthy people contains only trace amounts of protein, usually called microprotein. A negative result generally indicates that the protein content in urine of the examinee is within the normal range and does not exceed the sensitivity threshold of the test method.

However, urine protein test is one of the indicators for evaluating kidney function. A comprehensive analysis of clinical symptoms and other test results can be more accurate.