Mayo study of 3817 temporal artery biopsies performed on 2539 pts (1994-2004) - 681 (27%) +Bx on one side. Biopsy length HAD NO significant effect BX positivity. If 1-side initially Bx-, then Bx of the contralateral side yielded an added 7% Bx positivity https://t.co/Lr8hYHIlG7 https://t.co/alIpklPtsw