- Hypertension (defined as BP>150/90 on 2 separate days): The blood pressure will be taken by machine or manually at the time of screening and may be repeated once on that day to determine accuracy. If the systolic blood pressure exceeds 150 or diastolic blood pressure exceeds 90, the volunteer will be asked to return another day for a repeat test. If, on repeat, either value is again elevated, the volunteer will be excluded, counseled on appropriate health habits to combat hypertension, and counseled to see his or her doctor.