Final answer:
The + vs - urobilinogen urine assay measures the levels of urobilinogen in urine. + indicates increased RBC breakdown, while - indicates liver disease.
Step-by-step explanation:
URINE ANALYSIS.
Urine analysis, also known as urinalysis, is a diagnostic test used to evaluate the composition and properties of urine. It can provide valuable information about the overall health of an individual, including the presence of certain diseases or conditions.
Urobilinogen Urine Assay:
The + vs - urobilinogen urine assay is a test that measures the levels of urobilinogen in the urine. Urobilinogen is a breakdown product of bilirubin, a pigment found in bile that is excreted by the liver.
In this case, a + sign indicates increased RBC breakdown, while a - sign indicates liver disease. Increased RBC breakdown can be seen in conditions such as nephritis, trauma, tuberculosis of the kidney, and kidney stones. Liver disease can lead to impaired bilirubin metabolism, resulting in increased levels of bilirubin and urobilinogen in the blood and urine.