Question: how to know if my blood pressure is high or low?
Answer: Normal: A systolic pressure below 120 with a diastolic pressure below 80. Elevated: A systolic pressure of between 120 and 129 with a diastolic pressure below 80. High blood pressure (hypertension stage 1): A systolic pressure of between 130 and 139, or a diastolic pressure between 80 and 89.