When is temporal artery biopsy (TAB) performed in suspected giant cell arteritis (GCA) (temporal arteritis)?

Updated: Sep 10, 2020
  • Author: Mythili Seetharaman, MD; Chief Editor: Herbert S Diamond, MD  more...
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TAB should be performed as soon as possible after clinical suspicion is raised. If the index of suspicion is high, the clinician should not delay starting therapy while awaiting TAB. Failure to treat increases the risk of ischemic ocular and cerebral complications, and TAB results remain positive for characteristic GCA pathology for at least 2 weeks after treatment is started.

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