Hello all, so most of you may know by now that the pcat has updated so anyone that has the collins packets prior to the 2016-2017 update let me tell you the only thing useful about it is breaking down the basics and key concepts. However the format and structure of the test has change. Invest in an up to date collins, as well as practice practice practice on pearson review for the sake of time as well as to get into the habit of being exposed to the testing format. Molec and cell, tissues, and disease! Know it!