BRAF and differentiated thyroid carcinoma: Katerina et al. [30] in their study for the foremost impact preanalytical conditions for the IHC detection of BRAF V600E (VE1) antibody on colorectal and papillary thyroid carcinoma conclude that the most proper tissue fixation ought to be done within 2 hours of tissue collection for 12-24 hours in 10% neutral buffered formalin.