ASCP PA Practice Questions - ASCP Pathologists' Assistant (PA) Exam

What is the recommended fixation time for breast tissue before performing HER2 immunohistochemistry according to ASCO/CAP guidelines?

Less than 1 hour 6-72 hours in 10% neutral buffered formalin More than 96 hours No fixation required

6-72 hours in 10% neutral buffered formalin

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