血压一级值是多少算正常

　　正常血压一级值：收缩压140~159mmHg和（或）舒张压90~99mmHg。高血压2级：收缩压160~179mmHg和（或）舒张压100~109mmHg。高血压3级：收缩压≥180mmHg和（或）舒张压≥110mmHg。