Categories are Normal, Prehypertension, Stage 1 high blood pressure, Stage 2 high blood pressure
Systolic (top number) from normal to Stage 2 are less than 120, 120-139, 140-159, 160 or higher
Diastolic (bottom number) from normal to Stage 2 are less than 80, 80-89, 90-99, 100 or higher