False-negative Information and Courses from MediaLab, Inc.
These are the MediaLab courses that cover False-negative and links to relevant pages within the course.
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| A patient suspected of a urinary tract infection has a negative nitrite test, but bacteria is present upon microscopic examination. What may have caused a false-negative result? (Choose ALL of the correct answers) | View Page |
| False-negative results on reagent strips for leukocytes may occur when the specimen contains: (Choose ALL of the correct answers) | View Page |
| A false-negative reaction while performing the DAT technique may be the result of: | View Page |
| Limitations of the Procedure The product profile for Ictotest® points out that bilirubin is very light sensitive, so urine specimens should be protected from excessive light exposure and examined as quickly as possible when received in the laboratory. On standing, bilirubin, which has a goldish color, is oxidized to biliverdin, which is a green color. Many of the procedures used to detect bilirubin will not react with biliverdin, so false-negative results may occur if urine is not fresh when tested. | View Page |