Which type of test is used as a confirmatory test for urine bile?

The Ictotest is specifically designed to detect bile pigments, particularly bilirubin, in urine. It serves as a confirmatory test for the presence of bile, making it highly sensitive and reliable for this purpose. When the urine sample is tested with the Ictotest, a color change occurs, indicating the presence of bilirubin, which is an important indicator of liver function and biliary obstruction.

In contrast, other options like reagent test strips are primarily used for initial screening and may not provide the specificity required to confirm bile pigments definitively. Electron microscope examination is a complex method used to visualize cellular structures and is not applicable for testing urine bile. Additionally, a pH test measures the acidity or alkalinity of urine but does not provide information regarding the presence of bile pigments. Therefore, the Ictotest stands out as the appropriate choice for confirmatory testing of urine bile.