Ive talked to people who got 390 and 400s and they had different variations of the exam. One had more anatomy and one had mostly organic chemistry questions and havent taken it yet. Whats common is that they guessed tons of times. There isnt a reference sheet so memorizing all the formulas is pointless. The basic stuff conversions, logs, derivatives is what i feel is sufficient.
Im winging it cause they keep telling me that your going to be guessing anyway just work what you need to and the rest you will make the most educated guess for. At least do one pearson test before taking it.