What is the normal blood value in urine?

In the context of normal urinalysis, the presence of certain substances in urine can indicate various health conditions. A normal urine test typically shows that certain substances, like proteins and glucose, should not be present in significant amounts. Thus, a negative result reflects that typical healthy urine contains no abnormal levels of these substances.

When we refer to blood values, a normal urine sample would not show the presence of blood (hematuria) or related substances, as their occurrence could signify underlying health issues such as infections, kidney stones, or trauma. Therefore, a negative result is indicative of normal health status in this regard, meaning no abnormal concentrations of substances like proteins, glucose, or blood.

In this context, the other options suggest different levels or conditions that do not accurately represent normal findings in urine. For example, positive, 50 mg/dL, and trace responses suggest varying degrees of abnormality that would warrant further investigation.