s usually meant to be kept between 2
and 4, or between 2
and 3. So 7 is
high but I believe that people on
warfarin (brand name Coumadin) can find themselves at 9 or higher not infrequently. That's not good.
Yes, when hemoglobin is low, a doctor would usually consider that bleeding might be making it low. Another possible cause is that a person isn't getting enough iron, or producing enough red blood cells (as in marrow cancer), or maybe the red blood cells are being destroyed.