Less than 140/90: Normal BP: Systolic lower than 120 mm Hg, diastolic lower than 80 mm Hg. Prehypertension (means above the normal but not high enough to call it high BP): Systolic 120-139 mm Hg, diastolic 80-89 mm Hg. High blood BP is any value above 140/90. I hope this helps.
Answered 2/27/2019
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