Which tests are performed in the diagnosis of encephalitis?

Updated: Aug 07, 2018
  • Author: David S Howes, MD; Chief Editor: Barry E Brenner, MD, PhD, FACEP  more...
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Blood and urine tests that may be helpful include the following:

  • Complete blood count (CBC)

  • Serum electrolyte levels

  • Serum glucose level

  • Blood urea nitrogen (BUN) and creatinine levels

  • Urine electrolyte levels

  • Urine or serum toxicology screening

A lumbar puncture (LP) should be performed in all cases of suspected viral encephalitis.

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