Memory tests conducted by a neurologist are part of diagnosing and differentiating between types of dementia, according to WebMD. There are several different kinds of mental status exams, and they are used in combination with neural imaging, medical history and physical exams according to the Alzheimer's Association.
Both cognitive and memory skills are target areas for diagnostic testing, according to Mayo Clinic. One example is called the mini-cog exam, which includes drawing a clock with a specified time and remembering three objects presented several minutes later, explains the Alzheimer's Association. Such tests are generally done in conjunction with other diagnostic tools, such as lab work, to differentiate the diagnosis.