The only way to tell whether you have high blood pressure is to have it measured with a blood pressure cuff (sphygmomanometer).
Blood pressure (BP) is classified as follows by the American Heart Association:
Tests may be ordered by your health care provider to check for causes of high blood pressure and to assess any organ damage from high blood pressure or its treatment. These tests may include the following:
Any of the following may be performed to detect damage to the heart or blood vessels: