Different health professions require different standardized tests in the application process. Medical school (MD, DO, and some foreign) require the MCAT. Dental schools reqiure the DAT. Veterinary medicine schools require the GRE and some would accept the MCAT. The MCAT and DAT are based on content knowledge you amass during your years in college and require extensve knowledge and intensive preparation. The links on the left provide comprehensive information about these standardized tests and preparation materials.