Medical>basic medical laboratory technique
There is a promising laboratory technique called PCR, which can detect very small amounts of viral DNA in the affected skin. However, it is mostly used for research nowadays. The use of neuroimaging (pictures of the brain), particularly MRI (magnetic resonance imaging), may sometimes show inflammation of the facial nerves and determine whether the infection has spread to other nerves or the brain. A spinal tap is used in rare cases, especially when the diagnosis is not clear.
In a pilot study involving proficiency testing for human immunodeficiency virus, markedly diverse and potentially confusing test report forms were encountered among participating laboratories. Therefore, a comprehensive study of human immunodeficiency virus type 1 report forms was conducted from state-licensed testing laboratories in California. Participants analyzed three serum samples of known human immunodeficiency virus type 1 antibody reactivity and reported their results on forms that they would normally submit to clinicians. Report forms from 84 laboratories were evaluated for content, design, and clarity. Differences were found among commercial, hospital, and public health laboratories. The significance of these findings is discussed. This technique also may be applied to evaluate laboratory report form design and content for other diagnostic test results.
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