False Positives For The Presence Of Nitrites Can Happen If The Specimen Is _______

1. Urinalysis - Clinical Methods - NCBI Bookshelf

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Urinalysis is the examination of urine for certain physical properties, solutes, cells, casts, crystals, organisms, or particulate matter. Because urinalysis is easy, cheap, and productive, it is recommended as part of the initial examination of all patients and should be repeated as clinically warranted. This chapter focuses on what the physician may do in a few minutes with a urine sample, reagent strips, a microscope, and an inquiring mind. Such analysis may lead to more sophisticated chemical, immunologic, or bacteriologic studies.

If the urine sample is not mixed well before testing, a false-negative result can occur because the red cells tend to settle in the bottom of the container.

positives for the presence of nitrites can happen if the specimen sits at room temperature too long, since bacteria can begin to multiply at room temperature.
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This study lays the groundwork for the next decennial national roadside survey of impaired driving, which will estimate the incidence of alcohol- ...

The DIP | U.S. Urine Analysis Test System is intended for prescription home-use only, with results provided directly to the physician. The results can be ...

groups, but the presence of cerium can be readily shown if a strong- yellow ... unduly large precipitate, should have been too great, it may be reduced by ...

Feb 7, 2020 · physician can be notified and the specimen can be recollected if ... nitrites, specimen will undergo quantitative culture for uropathogenic ...

Since cell walls are negatively charged, a positive dye will go inside, while a negative dye will stay out. PREPARATION OF BACTERIAL SPECIMENS. In order to ...

If you heat-fix too little, the organism will wash off the slide. If you heat-fix too much, the organisms may be incinerated. Specific instructions for ...

Jun 26, 2013 · ... would be 100% if the pond happened to be assessed at high-water stage ... ods offer a fast screening tool but can suffer from false positives.

Screening is a hierarchical, although flexible, procedure. If it errs, it should err toward the false positive. The idea is to rule out people without problems, ...