Fill out the pharmacology examination application and include a copy of your official state nursing license. Schedule your exam. You must have an official state or multi-state license before taking the test.
Study every day. Use any provided or suggested textbooks, pamphlets or data as study aids. Ask an administrator for official study review guides if you are taking the test at a university. Metropolitan Community College, for example, offers a pharmacology review document as a study aid. These documents provide a step-by-step process for how and what to study. Among other things, a test taker must show knowledge in medication side effects, discuss the immune system, understand the purpose of diuretics and correctly gauge IV flows.
Take the exam. A standard LPN pharmacology test is 50 questions long. An LPN must score a 76 percent or better to successfully pass the test.