What is a normal protein value in urine?

A normal protein value in urine is considered to be 'Negative'. This means that there are no detectable levels of protein in the urine, which is an indication of healthy kidney function. The kidneys are responsible for filtering waste while retaining essential proteins in the bloodstream, and the presence of protein in the urine can suggest a disruption in this filtration process, typically associated with kidney damage or disease. Therefore, a negative reading indicates that the filtration mechanisms are functioning as they should.

Trace and 1+ values indicate some presence of protein, which may suggest a potential issue and prompt further investigation. Similarly, a 2+ reading indicates a higher concentration of protein, which is more concerning and typically requires medical evaluation. Hence, the negative value is the benchmark for normality in urine protein readings.