The admission test is a very interesting experience. You have two portions, you have a 90 question ( I believe that is how many it was) and you don't have a lot of time to answer. This is the academic aptitude portion and it has math, synonyms (like a sentence with a word and you have to tell what a synonym for the word is, and spatial problems with shapes (like this is to this). The second part is a reading comp part where you read a passage and then answer the questions based on it.
The first time I took it I didn't answer enough questions and my score was terrible, I didn't even get through half of the questions on the first part. My personal strategy when I retook it was answer ALL the questions even if i had to guess. My score the second time was excellent. The test scores are based on how well everyone else does so if you got only 20 questions right but everyone else that tested that day where ever they were got 10 right then you will be in the top percentile.
The reading is tough because you are kinda burnt out after all the questions in the first portion but don't read the passage, you will waste all of your time, Just scan the passages for the answers. I don't think many people actually answer all of the reading comp questions so don't worry if you don't. I'm sure others have different strategies but that is what worked for me, after I knew how the test was the first time I knew how to take it the second time.
As far as studying goes, focus a lot on fractions (add, subtract, dividing and multiply) and converting fractions to decimals and vice versa. That is a lot of the math because when you get to dosage calcs that is pretty much the basis.
Hope that helps!