Blood tests are one of the preliminary tests done on stroke patients, and are also the most common. These tests can be done to identify various characteristics of your blood, such as your cholesterol levels, platelet counts, clotting factors, glucose levels, and more. By identifying the characteristics of your blood, physicians may be able to determine the cause of your stroke or any blood abnormalities that may lead to a deficiency. They may also use this information to propose preventative measures to decrease the likelihood of a future stroke or other health problems.
Blood tests are fairly straight forward, with blood being taken from a vessel in the arm using a needle. Note however that one blood test may look at only one particular trait of the blood. Since this is the case, do not be alarmed if numerous tubes of blood are taken as many tests need to be done to help identify and treat your condition.