The Effect of Corticosteroids on Temporal Artery Biopsy Positivity in Giant Cell Arteritis: Timing is Everything.

Objective: Temporal artery biopsy (TAB) remains the standard criterion for the diagnosis of giant cell arteritis (GCA). Temporal artery biopsy is suggested to be performed within 2 weeks from the initiation of corticosteroids. However, the effects of TAB timing on the sensitivity of its findings still warrant further investigation.