Confusion laboratory findings

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] ;

Overview

Laboratory tests

A large number of tests are needed in presentations of confusion. Most of the tests are to determine the cause of confusion. Careful history can reduce the burden of unnecessary tests.

  • Blood tests include routine tests like CBC to assess general condition.
  • Serum creatine, glucose, calcium , electrolytes.
  • Blood for toxins and drugs.
  • Urine analysis and culture.
  • Blood culture if infectious cause has to be evaluated.
  • Blood gas analysis if any metabolic derangement are suspected.
  • Vitamin assays and cholesterol levels may indicate nutritional status.
  • Renal function tests and liver function tests are useful if they are the cause of confusion.
  • Assesment of hormone levels may be usefull espicecially thyroid.
  • In cases of brain infections lumbar puncture is done and fluid is evaluated.

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