What is the role of lab testing in the diagnosis of herpes zoster (shingles)?

Updated: Feb 11, 2021
  • Author: Camila K Janniger, MD; Chief Editor: Dirk M Elston, MD  more...
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In most patients, confirming the diagnosis via laboratory testing usually has no utility, because most tests are time consuming, lack specificity, or are unavailable outside of research facilities. In select patient populations, however, the presentation can be atypical and may require additional testing. This is particularly true in immunocompromised patients.

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