Abstract: . . .  diastolic pressure, the pressure in your arteries when your heart rests between beats. The categories below indicate blood pressure ranges. Category Systolic Diastolic Normal Less than 120 Less than 80 Prehypertension 120-139 80-89 Hypertension 140 and above 90 and above Is it safe to donate blood if my blood pressure is high? High blood pressure is not known to cause problems with blood donation unless it is above 180/100. If it is above this level, we do not allow blood donation until the . . .
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