Distinguishing Information and Courses from MediaLab, Inc.
These are the MediaLab courses that cover Distinguishing and links to relevant pages within the course.
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| Clinical Significance Urinary urobilinogen may be increased in the presence of a hemolytic process such as hemolytic anemia. It may also be increased with infectious hepatitis, or with cirrhosis. Comparing the urinary bilirubin result with the urobilinogen result may assist in distinguishing between red cell hemolysis, hepatic disease, and biliary obstruction. Urobilinogen is increased in hemolytic disease and urine bilirubin is negative. Urobilinogen is increased in hepatic disease, and urine bilirubin may be positive or negative. Urobilinogen is low with biliary obstruction, and urine bilirubin is positive. Reagent strips methods however, cannot distinguish normal urobilinogen from absent urobilinogen, as might be seen in complete biliary obstruction. | View Page |
| Bacitracin susceptibility is useful for which two of the following: | View Page |
| Match the names of each of the fungal species listed in the drop-down box with the corresponding identifying structures illustrated in the photomicrographs: | View Page |
| Renal Tubular Epithelial Cell Another type of epithelial cell is the renal tubular epithelial cell. The proximal and distal convoluted tubules are the sites of origin for one form of these cells. They occur singly and are large (14-60 microns). Papancolaou stain is useful in distinguishing renal tubular cells from other mononuclear cells in urine. Increased numbers of proximal and distal convoluted renal epithelial cells are seen in cases of acute tubular necrosis and certain drug or heavy metal intoxication. | View Page |
| Contaminants and Artifacts There are several contaminants and artifacts which must be identified. This slide shows a fiber. Fibers may occur in any specimen from clothing, diapers, lint, toilet paper or lens paper. They are usually longer and wider than casts and have more distinct edges. Striation and blunt ends are distinguishing features of fibers. | View Page |