What is the role of lab testing in the diagnosis of tardive dyskinesia (TD)?

Updated: Oct 17, 2018
  • Author: James Robert Brasic, MD, MPH; Chief Editor: Selim R Benbadis, MD  more...
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In addition, the following tests may be appropriate:

  • Thyroid function tests to exclude thyroid dysfunction

  • Serum biochemistry, serum copper, serum ceruloplasmin, thyroid function tests, and syphilis serology to evaluate tardive blepharospasm

  • Connective tissue disease screening tests to exclude systemic lupus erythematosus and other vasculitides

  • Red blood cell (RBC) counts to exclude polycythemia rubra vera

  • Serum calcium level

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